Observation of the magnetic C4 phase in Ca1-xNaxFe2As2 and its universality in the hole-doped 122 superconductors

Taddei, K. M.; Allred, J. M.; Bugaris, D. E.; Lapidus, S. H.; Krogstad, M. J.; Claus, H.; Chung, D. Y.; Kanatzidis, M. G.; Osborn, R.; Rosenkranz, S.; Chmaissem, O.

doi:10.1103/PhysRevB.95.064508

Title: Observation of the magnetic $C_{4}$ phase in ${Ca}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$ and its universality in the hole-doped 122 superconductors

Abstract

Since its discovery in 2014, the magnetic tetragonal C₄ phase has been identified in a growing number of hole-doped 122 Fe-based superconducting compounds. Exhibiting a unique double-Q magnetic structure and a strong competition with both superconducting and magnetic order parameters, the C₄ phase and the conditions of its formation are of significant interest to understanding the fundamental mechanisms in these materials. Particularly, separating the importance of direct changes to the relative size of hole and electron pockets at the Fermi surface (achieved via charge doping) from the role of structural changes due to differences of ionic radii of dopants is useful to determine the underlying parameter which causes the C₄ instability. Here, we report the discovery of the C₄ phase in a fourth member of the hole-doped 122 materials Ca_1-xNa_xFe₂As₂(0.20 ≤ x ≤ 0.50) as determined from neutron and x-ray powder diffraction studies. The maximum of the C₄ dome is observed at x = 0.44 with a reentrant temperature T_r = 52 K and an extent of Δx ~ 0.07 in composition. It is observed that for a range of compositions within the C₄ dome (0.40 ≤ x ≤ 0.42), there is a second reentrance (Tr₂ < Tr) where themore »« less

Authors:

Taddei, K. M. ^[1]; Allred, J. M. ^[2]; Bugaris, D. E. ^[2]; Lapidus, S. H. ^[2]; Krogstad, M. J. ^[3]; Claus, H. ^[2]; Chung, D. Y. ^[2]; Kanatzidis, M. G. ^[4]; Osborn, R. ^[2]; Rosenkranz, S. ^[2]; Chmaissem, O. ^[3]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Northern Illinois Univ., DeKalb, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
Northern Illinois Univ., DeKalb, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States)

Publication Date:: Wed Feb 15 00:00:00 EST 2017

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; Materials Sciences and Engineering Division

OSTI Identifier:: 1352516

Alternate Identifier(s):: OSTI ID: 1344007; OSTI ID: 1376534

Grant/Contract Number:: AC02-06CH11357; AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 95; Journal Issue: 6; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Taddei, K. M., Allred, J. M., Bugaris, D. E., Lapidus, S. H., Krogstad, M. J., Claus, H., Chung, D. Y., Kanatzidis, M. G., Osborn, R., Rosenkranz, S., and Chmaissem, O. Observation of the magnetic C4 phase in Ca1-xNaxFe2As2 and its universality in the hole-doped 122 superconductors.  United States: N. p., 2017. 
Web.  doi:10.1103/PhysRevB.95.064508.

Copy to clipboard


                    Taddei, K. M., Allred, J. M., Bugaris, D. E., Lapidus, S. H., Krogstad, M. J., Claus, H., Chung, D. Y., Kanatzidis, M. G., Osborn, R., Rosenkranz, S., & Chmaissem, O. Observation of the magnetic C4 phase in Ca1-xNaxFe2As2 and its universality in the hole-doped 122 superconductors.  United States.  https://doi.org/10.1103/PhysRevB.95.064508

Copy to clipboard


                    Taddei, K. M., Allred, J. M., Bugaris, D. E., Lapidus, S. H., Krogstad, M. J., Claus, H., Chung, D. Y., Kanatzidis, M. G., Osborn, R., Rosenkranz, S., and Chmaissem, O. Wed .  
"Observation of the magnetic C4 phase in Ca1-xNaxFe2As2 and its universality in the hole-doped 122 superconductors".  United States.  https://doi.org/10.1103/PhysRevB.95.064508.  https://www.osti.gov/servlets/purl/1352516.

Copy to clipboard


                    
@article{osti_1352516,

  title        = {Observation of the magnetic C4 phase in Ca1-xNaxFe2As2 and its universality in the hole-doped 122 superconductors},

  author       = {Taddei, K. M. and Allred, J. M. and Bugaris, D. E. and Lapidus, S. H. and Krogstad, M. J. and Claus, H. and Chung, D. Y. and Kanatzidis, M. G. and Osborn, R. and Rosenkranz, S. and Chmaissem, O.},

  abstractNote = {Since its discovery in 2014, the magnetic tetragonal C4 phase has been identified in a growing number of hole-doped 122 Fe-based superconducting compounds. Exhibiting a unique double-Q magnetic structure and a strong competition with both superconducting and magnetic order parameters, the C4 phase and the conditions of its formation are of significant interest to understanding the fundamental mechanisms in these materials. Particularly, separating the importance of direct changes to the relative size of hole and electron pockets at the Fermi surface (achieved via charge doping) from the role of structural changes due to differences of ionic radii of dopants is useful to determine the underlying parameter which causes the C4 instability. Here, we report the discovery of the C4 phase in a fourth member of the hole-doped 122 materials Ca1-xNaxFe2As2(0.20 ≤ x ≤ 0.50) as determined from neutron and x-ray powder diffraction studies. The maximum of the C4 dome is observed at x = 0.44 with a reentrant temperature Tr = 52 K and an extent of Δx ~ 0.07 in composition. It is observed that for a range of compositions within the C4 dome (0.40 ≤ x ≤ 0.42), there is a second reentrance (Tr2 < Tr) where the antiferromagnetic C2 phase is recovered—a feature previously only seen in Ba1-xKxFe2As2. A phase diagram is presented for Ca1-xNaxFe2As2 and compared to the other Na-doped 122's—A1-xNaxFe2As2 with A = Ba, Sr, and Ca. Lastly, the structural parameters for these three systems are compared and the importance of the “chemical pressure” due to changing the A-site ion (A = Ba, Sr, Ca) is discussed.},

  doi          = {10.1103/PhysRevB.95.064508},

  journal      = {Physical Review B},

  number       = 6,

  volume       = 95,

  place        = {United States},

  year         = {Wed Feb 15 00:00:00 EST 2017},

  month        = {Wed Feb 15 00:00:00 EST 2017}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1103/PhysRevB.95.064508

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 21 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Symmetry-breaking orbital anisotropy observed for detwinned Ba(Fe1-xCox)2As2 above the spin density wave transition
journal, April 2011

Yi, M.; Lu, D.; Chu, J. -H.
Proceedings of the National Academy of Sciences, Vol. 108, Issue 17
DOI: 10.1073/pnas.1015572108

Muon spin rotation study of the magnetic structure in the tetragonal antiferromagnetic state of weakly underdoped Ba _{1− x} K _x Fe ₂ As ₂
journal, September 2015

Mallett, B. P. P.; Pashkevich, Yu. G.; Gusev, A.
EPL (Europhysics Letters), Vol. 111, Issue 5
DOI: 10.1209/0295-5075/111/57001

Double-Q spin-density wave in iron arsenide superconductors
journal, January 2016

Allred, J. M.; Taddei, K. M.; Bugaris, D. E.
Nature Physics, Vol. 12, Issue 5
DOI: 10.1038/nphys3629

Least momentum space frustration as a condition for a ‘high T _c sweet spot’ in iron-based superconductors
journal, July 2012

Usui, Hidetomo; Suzuki, Katsuhiro; Kuroki, Kazuhiko
Superconductor Science and Technology, Vol. 25, Issue 8
DOI: 10.1088/0953-2048/25/8/084004

Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
journal, September 1976

Shannon, R. D.
Acta Crystallographica Section A, Vol. 32, Issue 5, p. 751-767
DOI: 10.1107/S0567739476001551

Manifestations of nematic degrees of freedom in the magnetic, elastic, and superconducting properties of the iron pnictides
journal, July 2012

Fernandes, Rafael M.; Schmalian, Jörg
Superconductor Science and Technology, Vol. 25, Issue 8
DOI: 10.1088/0953-2048/25/8/084005

Magnetic and structural transitions in layered iron arsenide systems: $A {Fe}_{2} {As}_{2}$ versus $R FeAsO$
journal, September 2008

Krellner, C.; Caroca-Canales, N.; Jesche, A.
Physical Review B, Vol. 78, Issue 10
DOI: 10.1103/PhysRevB.78.100504

Manifesto for a higher Tc
journal, April 2011

Basov, D. N.; Chubukov, Andrey V.
Nature Physics, Vol. 7, Issue 4
DOI: 10.1038/nphys1975

Scaling between Magnetic and Lattice Fluctuations in Iron Pnictide Superconductors
journal, September 2013

Fernandes, Rafael M.; Böhmer, Anna E.; Meingast, Christoph
Physical Review Letters, Vol. 111, Issue 13
DOI: 10.1103/PhysRevLett.111.137001

Magnetically driven suppression of nematic order in an iron-based superconductor
journal, May 2014

Avci, S.; Chmaissem, O.; Allred, J. M.
Nature Communications, Vol. 5, Issue 1
DOI: 10.1038/ncomms4845

Comparison of Ab initio Low-Energy Models for LaFePO, LaFeAsO, BaFe ₂ As ₂ , LiFeAs, FeSe, and FeTe: Electron Correlation and Covalency
journal, April 2010

Miyake, Takashi; Nakamura, Kazuma; Arita, Ryotaro
Journal of the Physical Society of Japan, Vol. 79, Issue 4
DOI: 10.1143/JPSJ.79.044705

Anion height dependence of T c and the density of states in iron-based superconductors
journal, May 2010

Kuchinskii, E. Z.; Nekrasov, I. A.; Sadovskii, M. V.
JETP Letters, Vol. 91, Issue 10
DOI: 10.1134/S0021364010100061

Effect of Uniaxial Strain on the Structural and Magnetic Phase Transitions in ${BaFe}_{2} {As}_{2}$
journal, February 2012

Dhital, Chetan; Yamani, Z.; Tian, Wei
Physical Review Letters, Vol. 108, Issue 8
DOI: 10.1103/PhysRevLett.108.087001

Tuning magnetism in FeAs-based materials via a tetrahedral structure
journal, August 2012

Kirshenbaum, K.; Butch, N. P.; Saha, S. R.
Physical Review B, Vol. 86, Issue 6
DOI: 10.1103/PhysRevB.86.060504

Detailed magnetic and structural analysis mapping a robust magnetic $C_{4}$ dome in ${Sr}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$
journal, April 2016

Taddei, K. M.; Allred, J. M.; Bugaris, D. E.
Physical Review B, Vol. 93, Issue 13
DOI: 10.1103/PhysRevB.93.134510

Structural, magnetic, and superconducting properties of Ba $_{1 - x}$ Na $_{x}$ Fe $_{2}$ As $_{2}$
journal, September 2013

Avci, S.; Allred, J. M.; Chmaissem, O.
Physical Review B, Vol. 88, Issue 9
DOI: 10.1103/PhysRevB.88.094510

Interplay of magnetic and structural transitions in iron-based pnictide superconductors
journal, July 2010

Cano, A.; Civelli, M.; Eremin, I.
Physical Review B, Vol. 82, Issue 2
DOI: 10.1103/PhysRevB.82.020408

Coexistence of superconductivity and magnetism in ${Ca}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$ : Universal suppression of the magnetic order parameter in 122 iron pnictides
journal, October 2015

Materne, Philipp; Kamusella, Sirko; Sarkar, Rajib
Physical Review B, Vol. 92, Issue 13
DOI: 10.1103/PhysRevB.92.134511

Divergent Nematic Susceptibility in an Iron Arsenide Superconductor
journal, August 2012

Chu, J. -H.; Kuo, H. -H.; Analytis, J. G.
Science, Vol. 337, Issue 6095
DOI: 10.1126/science.1221713

Phase diagram of Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$
journal, May 2012

Avci, S.; Chmaissem, O.; Chung, D. Y.
Physical Review B, Vol. 85, Issue 18
DOI: 10.1103/PhysRevB.85.184507

Disorder-promoted $C_{4}$ -symmetric magnetic order in iron-based superconductors
journal, April 2016

Hoyer, Mareike; Fernandes, Rafael M.; Levchenko, Alex
Physical Review B, Vol. 93, Issue 14
DOI: 10.1103/PhysRevB.93.144414

Anisotropic itinerant magnetism and spin fluctuations in ${BaFe}_{2} {As}_{2}$ : A neutron scattering study
journal, February 2009

Matan, K.; Morinaga, R.; Iida, K.
Physical Review B, Vol. 79, Issue 5
DOI: 10.1103/PhysRevB.79.054526

Effect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO _{1- y} (Ln = La, Nd)
journal, August 2008

Lee, Chul-Ho; Iyo, Akira; Eisaki, Hiroshi
Journal of the Physical Society of Japan, Vol. 77, Issue 8
DOI: 10.1143/JPSJ.77.083704

Spin reorientation driven by the interplay between spin-orbit coupling and Hund's rule coupling in iron pnictides
journal, December 2015

Christensen, Morten H.; Kang, Jian; Andersen, Brian M.
Physical Review B, Vol. 92, Issue 21
DOI: 10.1103/PhysRevB.92.214509

Superconductivity close to magnetic instability in $Fe {({Se}_{1 - x} {Te}_{x})}_{0.82}$
journal, December 2008

Fang, M. H.; Pham, H. M.; Qian, B.
Physical Review B, Vol. 78, Issue 22
DOI: 10.1103/PhysRevB.78.224503

Unconventional superconductivity in Ba0.6K0.4Fe2As2 from inelastic neutron scattering
journal, December 2008

Christianson, A. D.; Goremychkin, E. A.; Osborn, R.
Nature, Vol. 456, Issue 7224
DOI: 10.1038/nature07625

Tetragonal magnetic phase in ${Ba}_{1 - x} K_{x} {Fe}_{2} {As}_{2}$ from x-ray and neutron diffraction
journal, September 2015

Allred, J. M.; Avci, S.; Chung, D. Y.
Physical Review B, Vol. 92, Issue 9
DOI: 10.1103/PhysRevB.92.094515

Maximizing the Fermi-surface multiplicity optimizes the superconducting state of iron pnictide compounds
journal, July 2011

Usui, Hidetomo; Kuroki, Kazuhiko
Physical Review B, Vol. 84, Issue 2
DOI: 10.1103/PhysRevB.84.024505

Different resistivity response to spin-density wave and superconductivity at 20 K in Ca _{1− x} Na _x Fe ₂ As ₂
journal, September 2008

Wu, G.; Chen, H.; Wu, T.
Journal of Physics: Condensed Matter, Vol. 20, Issue 42
DOI: 10.1088/0953-8984/20/42/422201

Superconductivity-induced re-entrance of the orthorhombic distortion in Ba1−xKxFe2As2
journal, July 2015

Böhmer, A. E.; Hardy, F.; Wang, L.
Nature Communications, Vol. 6, Issue 1
DOI: 10.1038/ncomms8911

EXPGUI , a graphical user interface for GSAS
journal, April 2001

Toby, Brian H.
Journal of Applied Crystallography, Vol. 34, Issue 2
DOI: 10.1107/S0021889801002242

Interplay between tetragonal magnetic order, stripe magnetism, and superconductivity in iron-based materials
journal, March 2015

Kang, Jian; Wang, Xiaoyu; Chubukov, Andrey V.
Physical Review B, Vol. 91, Issue 12
DOI: 10.1103/PhysRevB.91.121104

Superconductivity above 33 K in (Ca _{1 − x} Na _x )Fe ₂ As ₂
journal, May 2010

Zhao, K.; Liu, Q. Q.; Wang, X. C.
Journal of Physics: Condensed Matter, Vol. 22, Issue 22
DOI: 10.1088/0953-8984/22/22/222203

Complex structures of different CaFe2As2 samples
journal, February 2014

Saparov, Bayrammurad; Cantoni, Claudia; Pan, Minghu
Scientific Reports, Vol. 4, Issue 1
DOI: 10.1038/srep04120

Neutron diffraction study of the magnetic and structural phase transitions in ${BaFe}_{2} {As}_{2}$
journal, May 2009

Wilson, Stephen D.; Yamani, Z.; Rotundu, C. R.
Physical Review B, Vol. 79, Issue 18
DOI: 10.1103/PhysRevB.79.184519

Competing magnetic double- $Q$ phases and superconductivity-induced reentrance of $C_{2}$ magnetic stripe order in iron pnictides
journal, October 2015

Gastiasoro, Maria N.; Andersen, Brian M.
Physical Review B, Vol. 92, Issue 14
DOI: 10.1103/PhysRevB.92.140506

Doping dependence of the superconductivity of (Ca $_{1 - x}$ Na $_{x}$ )Fe $_{2}$ As $_{2}$
journal, November 2011

Zhao, K.; Liu, Q. Q.; Wang, X. C.
Physical Review B, Vol. 84, Issue 18
DOI: 10.1103/PhysRevB.84.184534

Iron-Based Layered Superconductor: LaOFeP
journal, August 2006

Kamihara, Yoichi; Hiramatsu, Hidenori; Hirano, Masahiro
Journal of the American Chemical Society, Vol. 128, Issue 31
DOI: 10.1021/ja063355c

Phenomenological model of anisotropic peak broadening in powder diffraction
journal, April 1999

Stephens, Peter W.
Journal of Applied Crystallography, Vol. 32, Issue 2
DOI: 10.1107/S0021889898006001

Magnetic order without tetragonal-symmetry-breaking in iron arsenides: Microscopic mechanism and spin-wave spectrum
journal, January 2015

Wang, Xiaoyu; Kang, Jian; Fernandes, Rafael M.
Physical Review B, Vol. 91, Issue 2
DOI: 10.1103/PhysRevB.91.024401

Spin reorientation in ${Ba}_{0.65} {Na}_{0.35} {Fe}_{2} {As}_{2}$ studied by single-crystal neutron diffraction
journal, February 2015

Waßer, F.; Schneidewind, A.; Sidis, Y.
Physical Review B, Vol. 91, Issue 6
DOI: 10.1103/PhysRevB.91.060505

Complex phase diagram of ${Ba}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$ : A multitude of phases striving for the electronic entropy
journal, January 2016

Wang, L.; Hardy, F.; Böhmer, A. E.
Physical Review B, Vol. 93, Issue 1
DOI: 10.1103/PhysRevB.93.014514

Effect of doping on structural and superconducting properties in Ca $_{1 - x}$ Na $_{x}$ Fe $_{2}$ As $_{2}$ single crystals ( $x$ =0.5, 0.6, 0.75)
journal, August 2011

Haberkorn, N.; Maiorov, B.; Jaime, M.
Physical Review B, Vol. 84, Issue 6
DOI: 10.1103/PhysRevB.84.064533

Vestigial chiral and charge orders from bidirectional spin-density waves: Application to the iron-based superconductors
journal, January 2016

Fernandes, R. M.; Kivelson, S. A.; Berg, E.
Physical Review B, Vol. 93, Issue 1
DOI: 10.1103/PhysRevB.93.014511

Electronic nematicity above the structural and superconducting transition in BaFe2(As1−xP x )2
journal, June 2012

Kasahara, S.; Shi, H. J.; Hashimoto, K.
Nature, Vol. 486, Issue 7403
DOI: 10.1038/nature11178

Competing orders and spin-density-wave instability in La(O _1−x F _x )FeAs
journal, June 2008

Dong, J.; Zhang, H. J.; Xu, G.
EPL (Europhysics Letters), Vol. 83, Issue 2
DOI: 10.1209/0295-5075/83/27006

Magnetism, Superconductivity, and Spontaneous Orbital Order in Iron-Based Superconductors: Which Comes First and Why?
journal, December 2016

Chubukov, Andrey V.; Khodas, M.; Fernandes, Rafael M.
Physical Review X, Vol. 6, Issue 4
DOI: 10.1103/PhysRevX.6.041045

Magnetoelastic coupling in the phase diagram of Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$ as seen via neutron diffraction
journal, May 2011

Avci, S.; Chmaissem, O.; Goremychkin, E. A.
Physical Review B, Vol. 83, Issue 17
DOI: 10.1103/PhysRevB.83.172503

Works referencing / citing this record:

Electronic Properties and Fermi Surface for New Layered High-Temperature Superconductors CaAFe4As4 (A = K, Rb, and Cs): FLAPW-GGA Calculations
journal, November 2017

Suetin, D. V.; Shein, I. R.
Journal of Superconductivity and Novel Magnetism, Vol. 31, Issue 6
DOI: 10.1007/s10948-017-4404-y

Single-crystal growth of the iron-based superconductor La _0.34 Na _0.66 Fe ₂ As ₂
journal, October 2018

Gu, Yanhong; Wang, Jia-Ou; Ma, Xiaoyan
Superconductor Science and Technology, Vol. 31, Issue 12
DOI: 10.1088/1361-6668/aae42d

Optical and photoemission investigation of structural and magnetic transitions in the iron-based superconductor ${Sr}_{0.67} {Na}_{0.33} {Fe}_{2} {As}_{2}$
journal, December 2019

Yang, R.; Huang, J. W.; Zaki, N.
Physical Review B, Vol. 100, Issue 23
DOI: 10.1103/physrevb.100.235132

Preferred Magnetic Excitations in the Iron-Based ${Sr}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$ Superconductor
journal, January 2019

Guo, Jianqing; Yue, Li; Iida, Kazuki
Physical Review Letters, Vol. 122, Issue 1
DOI: 10.1103/physrevlett.122.017001

Similar Records in DOE PAGES and OSTI.GOV collections:

Detailed magnetic and structural analysis mapping a robust magnetic $C_{4}$ dome in ${Sr}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$

Journal Article Taddei, K. M. ; Allred, J. M. ; Bugaris, D. E. ; ... - Physical Review B

The recently discovered C₄ tetragonal magnetic phase in hole-doped members of the iron-based superconductors provides new insights into the origin of unconventional superconductivity. Previously observed in Ba_1-xNa_xFe₂As₂ (with A = K, Na), the C₄ magnetic phase exists within the well studied C₂ spin-density wave (SDW) dome, arising just before the complete suppression of antiferromagnetic (AFM) order but after the onset of superconductivity. Here in this paper, we present detailed x-ray and neutron diffraction studies of Sr_1-xNa_xFe₂As₂ (0.10 ≤ x ≤ 0.60) to determine their structural evolution and the extent of the C₄ phase. Spanning Δx ~ 0.14 in composition, themore »« less
Cited by 31
https://doi.org/10.1103/PhysRevB.93.134510

Full Text Available
Tetragonal magnetic phase in ${Ba}_{1 - x} K_{x} {Fe}_{2} {As}_{2}$ from x-ray and neutron diffraction

Journal Article Allred, J. M. ; Avci, S. ; Chung, D. Y. ; ... - Physical Review. B, Condensed Matter and Materials Physics

In this paper, combined neutron and x-ray diffraction experiments demonstrate the formation of a low-temperature minority magnetic tetragonal phase in Ba_0.76K_0.24Fe₂As₂ in addition to the majority magnetic, orthorhombic phase. The coincident enhancement in the magnetic (1/2 1/2 1) peaks shows that this minority phase is of the same type that was observed in Ba_1-xNa_xFe₂As₂ (0.24 ≤ x ≤ 0.28), in which the magnetic moments reorient along the c axis. This is evidence that the tetragonal magnetic phase is a universal feature of the hole-doped iron-based superconductors. Finally, the observations suggest that in this regime the energy levels of the C₂more »« less
Cited by 50
https://doi.org/10.1103/PhysRevB.92.094515

Full Text Available
Heat capacity jump at $T_{c}$ and pressure derivatives of superconducting transition temperature in the Ba $_{1 - x}$ Na $_{x}$ Fe $_{2}$ As $_{2}$ ( $0.1 \leq x \leq 0.9$ ) series

Journal Article Bud'ko, Sergey L. ; Chung, Duck Young ; Bugaris, Daniel ; ... - Physical Review. B, Condensed Matter and Materials Physics

We present the evolution of the initial (up to ~ 10 kbar) hydrostatic pressure dependencies of T_c and of the ambient pressure, and the jump in the heat capacity associated with the superconducting transition as a function of Na doping in the Ba1-xNaxFe2As2 family of iron-based superconductors. For Na concentrations 0.15 ≤ x ≤ 0.9, the jump in specific heat at T_c, ΔC_p|_{Tmore » $$_c$$}, follows the ΔC_p ∝ to T³ (the so-called BNC scaling) found for most BaFe₂As₂ based superconductors. This finding suggests that, unlike the related Ba_1-xK_xFe₂As₂ series, there is no significant modification of the superconducting state (e. g., change in superconducting gap symmetry) in the Ba_1-xNa_xFe₂As₂ series over the whole studied Na concentration range. Pressure dependencies are nonmonotonic for x = 0.2 and 0.24. For other Na concentrations, T_c decreases under pressure in an almost linear fashion. The anomalous behavior of the x = 0.2 and 0.24 samples under pressure is possibly due to the crossing of the phase boundaries of the narrow antiferromagnetic tetragonal phase, unique for the Ba_1-xNa_xFe₂As₂ series, with the application of pressure. The negative sign of the pressure derivatives of T_c across the whole superconducting dome (except for x = 0.2) is a clear indication of the nonequivalence of substitution and pressure for the Ba_1-xNa_xFe₂As₂ series.« less
https://doi.org/10.1103/PhysRevB.89.014510
Evidence for a Magnetic-Field-Induced Ideal Type-II Weyl State in Antiferromagnetic Topological Insulator $Mn {({Bi}_{1 - x} {Sb}_{x})}_{2} {Te}_{4}$

Journal Article Lee, Seng Huat ; Graf, David ; Min, Lujin ; ... - Physical Review. X

The discovery of Weyl semimetals (WSMs) has fueled tremendous interest in condensed matter physics. The realization of WSMs requires the breaking of either inversion symmetry (IS) or time-reversal symmetry (TRS). WSMs can be categorized into type-I and type-II WSMs, which are characterized by untilted and strongly tilted Weyl cones, respectively. Type-I WSMs with breaking of either IS or TRS and type-II WSMs with solely broken IS have been realized experimentally, but a TRS-breaking type-II WSM still remains elusive. In this article, we report transport evidence for a TRS-breaking type-II WSM observed in the intrinsic antiferromagnetic topological insulator Mn(Bi_1-xSb_x)₂Te₄ under magneticmore »« less
https://doi.org/10.1103/PhysRevX.11.031032
Expansion of the tetragonal magnetic phase with pressure in the iron arsenide superconductor ${Ba}_{1 - x} K_{x} {Fe}_{2} {As}_{2}$

Journal Article Hassinger, Elena ; Gredat, G. ; Valade, F. ; ... - Physical Review B

In the temperature-concentration phase diagram of most iron-based superconductors, antiferromagnetic order is gradually suppressed to zero at a critical point, and a dome of superconductivity forms around that point. The nature of the magnetic phase and its fluctuations is of fundamental importance for elucidating the pairing mechanism. In Ba_1–xK_xFe₂As₂ and Ba_1–xNa_xFe₂As₂, it has recently become clear that the usual stripelike magnetic phase, of orthorhombic symmetry, gives way to a second magnetic phase, of tetragonal symmetry, near the critical point, in the range from x = 0.24 to x = 0.28 for Ba_1–xK_xFe₂As₂. In a prior study, an unidentified phase wasmore »« less
Cited by 19
https://doi.org/10.1103/PhysRevB.93.144401

Full Text Available

Similar Records

Title: Observation of the magnetic C 4 phase in Ca 1 - x Na x Fe 2 As 2 and its universality in the hole-doped 122 superconductors

Abstract

Citation Formats

Symmetry-breaking orbital anisotropy observed for detwinned Ba(Fe1-xCox)2As2 above the spin density wave transition journal, April 2011

Muon spin rotation study of the magnetic structure in the tetragonal antiferromagnetic state of weakly underdoped Ba 1− x K x Fe 2 As 2 journal, September 2015

Double-Q spin-density wave in iron arsenide superconductors journal, January 2016

Least momentum space frustration as a condition for a ‘high T c sweet spot’ in iron-based superconductors journal, July 2012

Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides journal, September 1976

Manifestations of nematic degrees of freedom in the magnetic, elastic, and superconducting properties of the iron pnictides journal, July 2012

Magnetic and structural transitions in layered iron arsenide systems: A Fe 2 As 2 versus R FeAsO journal, September 2008

Manifesto for a higher Tc journal, April 2011

Scaling between Magnetic and Lattice Fluctuations in Iron Pnictide Superconductors journal, September 2013

Magnetically driven suppression of nematic order in an iron-based superconductor journal, May 2014

Comparison of Ab initio Low-Energy Models for LaFePO, LaFeAsO, BaFe 2 As 2 , LiFeAs, FeSe, and FeTe: Electron Correlation and Covalency journal, April 2010

Anion height dependence of T c and the density of states in iron-based superconductors journal, May 2010

Effect of Uniaxial Strain on the Structural and Magnetic Phase Transitions in BaFe 2 As 2 journal, February 2012

Tuning magnetism in FeAs-based materials via a tetrahedral structure journal, August 2012

Detailed magnetic and structural analysis mapping a robust magnetic C 4 dome in Sr 1 − x Na x Fe 2 As 2 journal, April 2016

Structural, magnetic, and superconducting properties of Ba 1 − x Na x Fe 2 As 2 journal, September 2013

Interplay of magnetic and structural transitions in iron-based pnictide superconductors journal, July 2010

Coexistence of superconductivity and magnetism in Ca 1 − x Na x Fe 2 As 2 : Universal suppression of the magnetic order parameter in 122 iron pnictides journal, October 2015

Divergent Nematic Susceptibility in an Iron Arsenide Superconductor journal, August 2012

Phase diagram of Ba 1 − x K x Fe 2 As 2 journal, May 2012

Disorder-promoted C 4 -symmetric magnetic order in iron-based superconductors journal, April 2016

Anisotropic itinerant magnetism and spin fluctuations in BaFe 2 As 2 : A neutron scattering study journal, February 2009

Effect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO 1- y (Ln = La, Nd) journal, August 2008

Spin reorientation driven by the interplay between spin-orbit coupling and Hund's rule coupling in iron pnictides journal, December 2015

Superconductivity close to magnetic instability in Fe ( Se 1 − x Te x ) 0.82 journal, December 2008

Unconventional superconductivity in Ba0.6K0.4Fe2As2 from inelastic neutron scattering journal, December 2008

Tetragonal magnetic phase in Ba 1 − x K x Fe 2 As 2 from x-ray and neutron diffraction journal, September 2015

Maximizing the Fermi-surface multiplicity optimizes the superconducting state of iron pnictide compounds journal, July 2011

Different resistivity response to spin-density wave and superconductivity at 20 K in Ca 1− x Na x Fe 2 As 2 journal, September 2008

Superconductivity-induced re-entrance of the orthorhombic distortion in Ba1−xKxFe2As2 journal, July 2015

EXPGUI , a graphical user interface for GSAS journal, April 2001

Interplay between tetragonal magnetic order, stripe magnetism, and superconductivity in iron-based materials journal, March 2015

Superconductivity above 33 K in (Ca 1 − x Na x )Fe 2 As 2 journal, May 2010

Complex structures of different CaFe2As2 samples journal, February 2014

Neutron diffraction study of the magnetic and structural phase transitions in BaFe 2 As 2 journal, May 2009

Competing magnetic double- Q phases and superconductivity-induced reentrance of C 2 magnetic stripe order in iron pnictides journal, October 2015

Doping dependence of the superconductivity of (Ca 1 − x Na x )Fe 2 As 2 journal, November 2011

Iron-Based Layered Superconductor: LaOFeP journal, August 2006

Phenomenological model of anisotropic peak broadening in powder diffraction journal, April 1999

Magnetic order without tetragonal-symmetry-breaking in iron arsenides: Microscopic mechanism and spin-wave spectrum journal, January 2015

Spin reorientation in Ba 0.65 Na 0.35 Fe 2 As 2 studied by single-crystal neutron diffraction journal, February 2015

Complex phase diagram of Ba 1 − x Na x Fe 2 As 2 : A multitude of phases striving for the electronic entropy journal, January 2016

Effect of doping on structural and superconducting properties in Ca 1 − x Na x Fe 2 As 2 single crystals ( x =0.5, 0.6, 0.75) journal, August 2011

Vestigial chiral and charge orders from bidirectional spin-density waves: Application to the iron-based superconductors journal, January 2016

Electronic nematicity above the structural and superconducting transition in BaFe2(As1−xP x )2 journal, June 2012

Competing orders and spin-density-wave instability in La(O 1−x F x )FeAs journal, June 2008

Magnetism, Superconductivity, and Spontaneous Orbital Order in Iron-Based Superconductors: Which Comes First and Why? journal, December 2016

Magnetoelastic coupling in the phase diagram of Ba 1 − x K x Fe 2 As 2 as seen via neutron diffraction journal, May 2011

Electronic Properties and Fermi Surface for New Layered High-Temperature Superconductors CaAFe4As4 (A = K, Rb, and Cs): FLAPW-GGA Calculations journal, November 2017

Single-crystal growth of the iron-based superconductor La 0.34 Na 0.66 Fe 2 As 2 journal, October 2018

Optical and photoemission investigation of structural and magnetic transitions in the iron-based superconductor Sr 0.67 Na 0.33 Fe 2 As 2 journal, December 2019

Preferred Magnetic Excitations in the Iron-Based Sr 1 − x Na x Fe 2 As 2 Superconductor journal, January 2019

Title: Observation of the magnetic $C_{4}$ phase in ${Ca}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$ and its universality in the hole-doped 122 superconductors

Symmetry-breaking orbital anisotropy observed for detwinned Ba(Fe1-xCox)2As2 above the spin density wave transition
journal, April 2011

Muon spin rotation study of the magnetic structure in the tetragonal antiferromagnetic state of weakly underdoped Ba _{1− x} K _x Fe ₂ As ₂
journal, September 2015

Double-Q spin-density wave in iron arsenide superconductors
journal, January 2016

Least momentum space frustration as a condition for a ‘high T _c sweet spot’ in iron-based superconductors
journal, July 2012

Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
journal, September 1976

Manifestations of nematic degrees of freedom in the magnetic, elastic, and superconducting properties of the iron pnictides
journal, July 2012

Magnetic and structural transitions in layered iron arsenide systems: $A {Fe}_{2} {As}_{2}$ versus $R FeAsO$
journal, September 2008

Manifesto for a higher Tc
journal, April 2011

Scaling between Magnetic and Lattice Fluctuations in Iron Pnictide Superconductors
journal, September 2013

Magnetically driven suppression of nematic order in an iron-based superconductor
journal, May 2014

Comparison of Ab initio Low-Energy Models for LaFePO, LaFeAsO, BaFe ₂ As ₂ , LiFeAs, FeSe, and FeTe: Electron Correlation and Covalency
journal, April 2010

Anion height dependence of T c and the density of states in iron-based superconductors
journal, May 2010

Effect of Uniaxial Strain on the Structural and Magnetic Phase Transitions in ${BaFe}_{2} {As}_{2}$
journal, February 2012

Tuning magnetism in FeAs-based materials via a tetrahedral structure
journal, August 2012

Detailed magnetic and structural analysis mapping a robust magnetic $C_{4}$ dome in ${Sr}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$
journal, April 2016

Structural, magnetic, and superconducting properties of Ba $_{1 - x}$ Na $_{x}$ Fe $_{2}$ As $_{2}$
journal, September 2013

Interplay of magnetic and structural transitions in iron-based pnictide superconductors
journal, July 2010

Coexistence of superconductivity and magnetism in ${Ca}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$ : Universal suppression of the magnetic order parameter in 122 iron pnictides
journal, October 2015

Divergent Nematic Susceptibility in an Iron Arsenide Superconductor
journal, August 2012

Phase diagram of Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$
journal, May 2012

Disorder-promoted $C_{4}$ -symmetric magnetic order in iron-based superconductors
journal, April 2016

Anisotropic itinerant magnetism and spin fluctuations in ${BaFe}_{2} {As}_{2}$ : A neutron scattering study
journal, February 2009

Effect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO _{1- y} (Ln = La, Nd)
journal, August 2008

Spin reorientation driven by the interplay between spin-orbit coupling and Hund's rule coupling in iron pnictides
journal, December 2015

Superconductivity close to magnetic instability in $Fe {({Se}_{1 - x} {Te}_{x})}_{0.82}$
journal, December 2008

Unconventional superconductivity in Ba0.6K0.4Fe2As2 from inelastic neutron scattering
journal, December 2008

Tetragonal magnetic phase in ${Ba}_{1 - x} K_{x} {Fe}_{2} {As}_{2}$ from x-ray and neutron diffraction
journal, September 2015

Maximizing the Fermi-surface multiplicity optimizes the superconducting state of iron pnictide compounds
journal, July 2011

Different resistivity response to spin-density wave and superconductivity at 20 K in Ca _{1− x} Na _x Fe ₂ As ₂
journal, September 2008

Superconductivity-induced re-entrance of the orthorhombic distortion in Ba1−xKxFe2As2
journal, July 2015

EXPGUI , a graphical user interface for GSAS
journal, April 2001

Interplay between tetragonal magnetic order, stripe magnetism, and superconductivity in iron-based materials
journal, March 2015

Superconductivity above 33 K in (Ca _{1 − x} Na _x )Fe ₂ As ₂
journal, May 2010

Complex structures of different CaFe2As2 samples
journal, February 2014

Neutron diffraction study of the magnetic and structural phase transitions in ${BaFe}_{2} {As}_{2}$
journal, May 2009

Competing magnetic double- $Q$ phases and superconductivity-induced reentrance of $C_{2}$ magnetic stripe order in iron pnictides
journal, October 2015

Doping dependence of the superconductivity of (Ca $_{1 - x}$ Na $_{x}$ )Fe $_{2}$ As $_{2}$
journal, November 2011

Iron-Based Layered Superconductor: LaOFeP
journal, August 2006

Phenomenological model of anisotropic peak broadening in powder diffraction
journal, April 1999

Magnetic order without tetragonal-symmetry-breaking in iron arsenides: Microscopic mechanism and spin-wave spectrum
journal, January 2015

Spin reorientation in ${Ba}_{0.65} {Na}_{0.35} {Fe}_{2} {As}_{2}$ studied by single-crystal neutron diffraction
journal, February 2015

Complex phase diagram of ${Ba}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$ : A multitude of phases striving for the electronic entropy
journal, January 2016

Effect of doping on structural and superconducting properties in Ca $_{1 - x}$ Na $_{x}$ Fe $_{2}$ As $_{2}$ single crystals ( $x$ =0.5, 0.6, 0.75)
journal, August 2011

Vestigial chiral and charge orders from bidirectional spin-density waves: Application to the iron-based superconductors
journal, January 2016

Electronic nematicity above the structural and superconducting transition in BaFe2(As1−xP x )2
journal, June 2012

Competing orders and spin-density-wave instability in La(O _1−x F _x )FeAs
journal, June 2008

Magnetism, Superconductivity, and Spontaneous Orbital Order in Iron-Based Superconductors: Which Comes First and Why?
journal, December 2016

Magnetoelastic coupling in the phase diagram of Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$ as seen via neutron diffraction
journal, May 2011

Electronic Properties and Fermi Surface for New Layered High-Temperature Superconductors CaAFe4As4 (A = K, Rb, and Cs): FLAPW-GGA Calculations
journal, November 2017

Single-crystal growth of the iron-based superconductor La _0.34 Na _0.66 Fe ₂ As ₂
journal, October 2018

Optical and photoemission investigation of structural and magnetic transitions in the iron-based superconductor ${Sr}_{0.67} {Na}_{0.33} {Fe}_{2} {As}_{2}$
journal, December 2019

Preferred Magnetic Excitations in the Iron-Based ${Sr}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$ Superconductor
journal, January 2019