Symmetry of reentrant tetragonal phase in Ba1-xNaxFe2As2 : Magnetic versus orbital ordering mechanism

Khalyavin, D. D.; Lovesey, S. W.; Manuel, P.; Krüger, F.; Rosenkranz, S.; Allred, J. M.; Chmaissem, O.; Osborn, R.

doi:10.1103/PhysRevB.90.174511

Title: Symmetry of reentrant tetragonal phase in ${Ba}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$ : Magnetic versus orbital ordering mechanism

Abstract

Magnetostructural phase transitions in Ba_1-xA_xFe₂As₂ (A = K, Na) materials are discussed for both magnetically and orbitally driven mechanisms, using a symmetry analysis formulated within the Landau theory of phase transitions. Both mechanisms predict identical orthorhombic space-group symmetries for the nematic and magnetic phases observed over much of the phase diagram, but they predict different tetragonal space-group symmetries for the newly discovered reentrant tetragonal phase in Ba_1-xNa_xFe₂As₂ (x similar to 0.24-0.28). In a magnetic scenario, magnetic order with moments along the c axis, as found experimentally, does not allow any type of orbital order, but in an orbital scenario, we have determined two possible orbital patterns, specified by P4/mnc1' and I4221' space groups, which do not require atomic displacements relative to the parent I4/mmm1' symmetry and, in consequence, are indistinguishable in conventional diffraction experiments. We demonstrate that the three possible space groups are, however, distinct in resonant x-ray Bragg diffraction patterns created by Templeton & Templeton scattering. This provides an experimental method of distinguishing between magnetic and orbital models.

Authors:: Khalyavin, D. D.; Lovesey, S. W.; Manuel, P.; Krüger, F.; Rosenkranz, S.; Allred, J. M.; Chmaissem, O.; Osborn, R.

Publication Date:: 2014-11-24

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1392314

DOE Contract Number:: AC02-06CH11357

Resource Type:: Journal Article

Journal Name:: Physical Review. B, Condensed Matter and Materials Physics

Additional Journal Information:: Journal Volume: 90; Journal Issue: 17; Journal ID: ISSN 1098-0121

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Citation Formats


                    Khalyavin, D. D., Lovesey, S. W., Manuel, P., Krüger, F., Rosenkranz, S., Allred, J. M., Chmaissem, O., and Osborn, R. Symmetry of reentrant tetragonal phase in Ba1-xNaxFe2As2 : Magnetic versus orbital ordering mechanism.  United States: N. p., 2014. 
        Web.  doi:10.1103/PhysRevB.90.174511.

Copy to clipboard


                    Khalyavin, D. D., Lovesey, S. W., Manuel, P., Krüger, F., Rosenkranz, S., Allred, J. M., Chmaissem, O., & Osborn, R. Symmetry of reentrant tetragonal phase in Ba1-xNaxFe2As2 : Magnetic versus orbital ordering mechanism.  United States.  https://doi.org/10.1103/PhysRevB.90.174511

Copy to clipboard


                    Khalyavin, D. D., Lovesey, S. W., Manuel, P., Krüger, F., Rosenkranz, S., Allred, J. M., Chmaissem, O., and Osborn, R. 2014.  
        "Symmetry of reentrant tetragonal phase in Ba1-xNaxFe2As2 : Magnetic versus orbital ordering mechanism".  United States.  https://doi.org/10.1103/PhysRevB.90.174511.

Copy to clipboard


                    
@article{osti_1392314,

  title        = {Symmetry of reentrant tetragonal phase in Ba1-xNaxFe2As2 : Magnetic versus orbital ordering mechanism},

  author       = {Khalyavin, D. D. and Lovesey, S. W. and Manuel, P. and Krüger, F. and Rosenkranz, S. and Allred, J. M. and Chmaissem, O. and Osborn, R.},

  abstractNote = {Magnetostructural phase transitions in Ba1-xAxFe2As2 (A = K, Na) materials are discussed for both magnetically and orbitally driven mechanisms, using a symmetry analysis formulated within the Landau theory of phase transitions. Both mechanisms predict identical orthorhombic space-group symmetries for the nematic and magnetic phases observed over much of the phase diagram, but they predict different tetragonal space-group symmetries for the newly discovered reentrant tetragonal phase in Ba1-xNaxFe2As2 (x similar to 0.24-0.28). In a magnetic scenario, magnetic order with moments along the c axis, as found experimentally, does not allow any type of orbital order, but in an orbital scenario, we have determined two possible orbital patterns, specified by P4/mnc1' and I4221' space groups, which do not require atomic displacements relative to the parent I4/mmm1' symmetry and, in consequence, are indistinguishable in conventional diffraction experiments. We demonstrate that the three possible space groups are, however, distinct in resonant x-ray Bragg diffraction patterns created by Templeton & Templeton scattering. This provides an experimental method of distinguishing between magnetic and orbital models.},

  doi          = {10.1103/PhysRevB.90.174511},

  url          = {https://www.osti.gov/biblio/1392314},
  journal      = {Physical Review. B, Condensed Matter and Materials Physics},

  issn         = {1098-0121},

  number       = 17,

  volume       = 90,

  place        = {United States},

  year         = {2014},

  month        = {11}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1103/PhysRevB.90.174511

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Orbital ordering and unfrustrated $(π, 0)$ magnetism from degenerate double exchange in the iron pnictides
journal, July 2010

Lv, Weicheng; Krüger, Frank; Phillips, Philip
Physical Review B, Vol. 82, Issue 4
https://doi.org/10.1103/PhysRevB.82.045125

Finite-temperature spin dynamics and phase transitions in spin-orbital models
journal, November 2009

Chen, C. -C.; Moritz, B.; van den Brink, J.
Physical Review B, Vol. 80, Issue 18
https://doi.org/10.1103/PhysRevB.80.180418

Microscopically derived Ginzburg-Landau theory for magnetic order in the iron pnictides
journal, December 2011

Brydon, P. M. R.; Schmiedt, Jacob; Timm, Carsten
Physical Review B, Vol. 84, Issue 21
https://doi.org/10.1103/PhysRevB.84.214510

A Guide to Electronic Multipoles in Photon Scattering and Absorption
journal, February 2013

William Lovesey, Stephen; Balcar, Ewald
Journal of the Physical Society of Japan, Vol. 82, Issue 2
https://doi.org/10.7566/JPSJ.82.021008

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
https://doi.org/10.1038/ncomms4845

Space group symmetry, spin-orbit coupling, and the low-energy effective Hamiltonian for iron-based superconductors
journal, October 2013

Cvetkovic, Vladimir; Vafek, Oskar
Physical Review B, Vol. 88, Issue 13
https://doi.org/10.1103/PhysRevB.88.134510

Nematic Susceptibility of Hole-Doped and Electron-Doped ${Ba F e}_{2} {As}_{2}$ Iron-Based Superconductors from Shear Modulus Measurements
journal, January 2014

Böhmer, A. E.; Burger, P.; Hardy, F.
Physical Review Letters, Vol. 112, Issue 4
https://doi.org/10.1103/PhysRevLett.112.047001

Magnetic order close to superconductivity in the iron-based layered LaO1-xF x FeAs systems
journal, May 2008

de la Cruz, Clarina; Huang, Q.; Lynn, J. W.
Nature, Vol. 453, Issue 7197
https://doi.org/10.1038/nature07057

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
https://doi.org/10.1103/PhysRevB.88.094510

Coexistence of Competing Antiferromagnetic and Superconducting Phases in the Underdoped $Ba ({Fe}_{0.953} {Co}_{0.047})_{2} {As}_{2}$ Compound Using X-ray and Neutron Scattering Techniques
journal, August 2009

Pratt, D. K.; Tian, W.; Kreyssig, A.
Physical Review Letters, Vol. 103, Issue 8
https://doi.org/10.1103/PhysRevLett.103.087001

Magnetic degeneracy and hidden metallicity of the spin-density-wave state in ferropnictides
journal, January 2010

Eremin, I.; Chubukov, A. V.
Physical Review B, Vol. 81, Issue 2
https://doi.org/10.1103/PhysRevB.81.024511

Analysis of azimuthal-angle scans in resonant x-ray Bragg diffraction and parity even and odd atomic multipoles in the multiferroic modification of the terbium manganate ${TbMnO}_{3}$
journal, January 2009

Scagnoli, V.; Lovesey, S. W.
Physical Review B, Vol. 79, Issue 3
https://doi.org/10.1103/PhysRevB.79.035111

Spectroscopic Imaging Scanning Tunneling Microscopy as a Probe of Orbital Structures and Ordering
journal, October 2009

Lee, Wei-Cheng; Wu, Congjun
Physical Review Letters, Vol. 103, Issue 17
https://doi.org/10.1103/PhysRevLett.103.176101

Superconductivity at 38 K in the Iron Arsenide $({Ba}_{1 - x} K_{x}) {Fe}_{2} {As}_{2}$
journal, September 2008

Rotter, Marianne; Tegel, Marcus; Johrendt, Dirk
Physical Review Letters, Vol. 101, Issue 10
https://doi.org/10.1103/PhysRevLett.101.107006

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
https://doi.org/10.1126/science.1221713

Orbital ordering induces structural phase transition and the resistivity anomaly in iron pnictides
journal, December 2009

Lv, Weicheng; Wu, Jiansheng; Phillips, Philip
Physical Review B, Vol. 80, Issue 22
https://doi.org/10.1103/PhysRevB.80.224506

Ba _{1- x} Rb _x Fe ₂ As ₂ and Generic Phase Behavior of Hole-doped 122-Type Superconductors : Ba
journal, February 2014

Peschke, Simon; Stürzer, Tobias; Johrendt, Dirk
Zeitschrift für anorganische und allgemeine Chemie, Vol. 640, Issue 5
https://doi.org/10.1002/zaac.201300668

Tensor X-ray optical properties of the bromate ion
journal, March 1985

Templeton, D. H.; Templeton, L. K.
Acta Crystallographica Section A Foundations of Crystallography, Vol. 41, Issue 2
https://doi.org/10.1107/S0108767385000277

Competing Orders in FeAs Layers
journal, October 2008

Lorenzana, J.; Seibold, G.; Ortix, C.
Physical Review Letters, Vol. 101, Issue 18
https://doi.org/10.1103/PhysRevLett.101.186402

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
https://doi.org/10.1103/PhysRevB.85.184507

Magnetic symmetry in the Bilbao Crystallographic Server: a computer program to provide systematic absences of magnetic neutron diffraction
journal, November 2012

Gallego, Samuel V.; Tasci, Emre S.; de la Flor, Gemma
Journal of Applied Crystallography, Vol. 45, Issue 6
https://doi.org/10.1107/S0021889812042185

Measurement of the elastoresistivity coefficients of the underdoped iron arsenide Ba(Fe $_{0.975}$ Co $_{0.025}$ ) $_{2}$ As $_{2}$
journal, August 2013

Kuo, Hsueh-Hui; Shapiro, Maxwell C.; Riggs, Scott C.
Physical Review B, Vol. 88, Issue 8
https://doi.org/10.1103/PhysRevB.88.085113

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
https://doi.org/10.1038/nature11178

Orbital-Dependent Modifications of Electronic Structure across the Magnetostructural Transition in ${BaFe}_{2} {As}_{2}$
journal, February 2010

Shimojima, T.; Ishizaka, K.; Ishida, Y.
Physical Review Letters, Vol. 104, Issue 5
https://doi.org/10.1103/PhysRevLett.104.057002

What drives nematic order in iron-based superconductors?
journal, January 2014

Fernandes, R. M.; Chubukov, A. V.; Schmalian, J.
Nature Physics, Vol. 10, Issue 2
https://doi.org/10.1038/nphys2877

Triple- $\vec{q}$ Octupolar Ordering in ${N p O}_{2}$
journal, October 2002

Paixão, J. A.; Detlefs, C.; Longfield, M. J.
Physical Review Letters, Vol. 89, Issue 18
https://doi.org/10.1103/PhysRevLett.89.187202

Spin-orbital frustrations and anomalous metallic state in iron-pnictide superconductors
journal, February 2009

Krüger, Frank; Kumar, Sanjeev; Zaanen, Jan
Physical Review B, Vol. 79, Issue 5
https://doi.org/10.1103/PhysRevB.79.054504

Electronic properties of crystalline materials observed in X-ray diffraction
journal, May 2005

Lovesey, S.; Balcar, E.; Knight, K.
Physics Reports, Vol. 411, Issue 4
https://doi.org/10.1016/j.physrep.2005.01.003

Preemptive nematic order, pseudogap, and orbital order in the iron pnictides
journal, January 2012

Fernandes, R. M.; Chubukov, A. V.; Knolle, J.
Physical Review B, Vol. 85, Issue 2
https://doi.org/10.1103/PhysRevB.85.024534

Character of the structural and magnetic phase transitions in the parent and electron-doped BaFe $_{2}$ As $_{2}$ compounds
journal, April 2011

Kim, M. G.; Fernandes, R. M.; Kreyssig, A.
Physical Review B, Vol. 83, Issue 13
https://doi.org/10.1103/PhysRevB.83.134522

ISODISPLACE : a web-based tool for exploring structural distortions
journal, July 2006

Campbell, Branton J.; Stokes, Harold T.; Tanner, David E.
Journal of Applied Crystallography, Vol. 39, Issue 4
https://doi.org/10.1107/S0021889806014075

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
https://doi.org/10.1103/PhysRevB.83.172503

Unified Picture for Magnetic Correlations in Iron-Based Superconductors
journal, September 2010

Yin, Wei-Guo; Lee, Chi-Cheng; Ku, Wei
Physical Review Letters, Vol. 105, Issue 10
https://doi.org/10.1103/PhysRevLett.105.107004

Polarization anisotropy of X-ray atomic factors and `forbidden' resonant reflections
journal, August 2005

Dmitrienko, Vladimir E.; Ishida, Kohtaro; Kirfel, Armin
Acta Crystallographica Section A Foundations of Crystallography, Vol. 61, Issue 5
https://doi.org/10.1107/S0108767305018209

Similar records in OSTI.GOV collections:

Symmetry of reentrant tetragonal phase in ${Ba}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$ : Magnetic versus orbital ordering mechanism

Journal Article Khalyavin, D.; Lovesey, S.; Manuel, P.; ... - Physical Review. B, Condensed Matter and Materials Physics

Magneto-structural phase transitions in Ba1-xAxFe2As2 (A = K, Na) materials are discussed for both magnetically and orbitally driven mechanisms, using a symmetry analysis formulated within the Landau theory of phase transitions. Both mechanisms predict identical orthorhombic space group symmetries for the nematic and magnetic phases observed over much of the phase diagram, but they predict different tetragonal space-group symmetries for the newly discovered re-entrant tetragonal phase in Ba1-xNaxFe2As2 (x ~ 0.24 - 0.28). In a magnetic scenario, magnetic order with moments along the c-axis, as found experimentally, does not allow any type of orbital order, but in an orbital scenario,more »« less
https://doi.org/10.1103/PhysRevB.90.174511
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 5
https://doi.org/10.1103/PhysRevB.93.144401

Full Text Available
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.; Allred, J.; Bugaris, D.; ... - 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 9
https://doi.org/10.1103/PhysRevB.93.134510

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; Chung, Duck; 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|_{T$$_c$$}, 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., changemore »« less
https://doi.org/10.1103/PhysRevB.89.014510
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

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

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 ismore »« less
Cited by 5
https://doi.org/10.1103/PhysRevB.95.064508

Full Text Available

Similar Records

Title: Symmetry of reentrant tetragonal phase in Ba 1 - x Na x Fe 2 As 2 : Magnetic versus orbital ordering mechanism

Abstract

Citation Formats

Orbital ordering and unfrustrated ( π , 0 ) magnetism from degenerate double exchange in the iron pnictides journal, July 2010

Finite-temperature spin dynamics and phase transitions in spin-orbital models journal, November 2009

Microscopically derived Ginzburg-Landau theory for magnetic order in the iron pnictides journal, December 2011

A Guide to Electronic Multipoles in Photon Scattering and Absorption journal, February 2013

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

Space group symmetry, spin-orbit coupling, and the low-energy effective Hamiltonian for iron-based superconductors journal, October 2013

Nematic Susceptibility of Hole-Doped and Electron-Doped Ba F e 2 As 2 Iron-Based Superconductors from Shear Modulus Measurements journal, January 2014

Magnetic order close to superconductivity in the iron-based layered LaO1-xF x FeAs systems journal, May 2008

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

Coexistence of Competing Antiferromagnetic and Superconducting Phases in the Underdoped Ba ( Fe 0.953 Co 0.047 ) 2 As 2 Compound Using X-ray and Neutron Scattering Techniques journal, August 2009

Magnetic degeneracy and hidden metallicity of the spin-density-wave state in ferropnictides journal, January 2010

Analysis of azimuthal-angle scans in resonant x-ray Bragg diffraction and parity even and odd atomic multipoles in the multiferroic modification of the terbium manganate TbMnO 3 journal, January 2009

Spectroscopic Imaging Scanning Tunneling Microscopy as a Probe of Orbital Structures and Ordering journal, October 2009

Superconductivity at 38 K in the Iron Arsenide ( Ba 1 − x K x ) Fe 2 As 2 journal, September 2008

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

Orbital ordering induces structural phase transition and the resistivity anomaly in iron pnictides journal, December 2009

Ba 1- x Rb x Fe 2 As 2 and Generic Phase Behavior of Hole-doped 122-Type Superconductors : Ba journal, February 2014

Tensor X-ray optical properties of the bromate ion journal, March 1985

Competing Orders in FeAs Layers journal, October 2008

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

Magnetic symmetry in the Bilbao Crystallographic Server: a computer program to provide systematic absences of magnetic neutron diffraction journal, November 2012

Measurement of the elastoresistivity coefficients of the underdoped iron arsenide Ba(Fe 0.975 Co 0.025 ) 2 As 2 journal, August 2013

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

Orbital-Dependent Modifications of Electronic Structure across the Magnetostructural Transition in BaFe 2 As 2 journal, February 2010

What drives nematic order in iron-based superconductors? journal, January 2014

Triple- q → Octupolar Ordering in N p O 2 journal, October 2002

Spin-orbital frustrations and anomalous metallic state in iron-pnictide superconductors journal, February 2009

Electronic properties of crystalline materials observed in X-ray diffraction journal, May 2005

Preemptive nematic order, pseudogap, and orbital order in the iron pnictides journal, January 2012

Character of the structural and magnetic phase transitions in the parent and electron-doped BaFe 2 As 2 compounds journal, April 2011

ISODISPLACE : a web-based tool for exploring structural distortions journal, July 2006

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

Unified Picture for Magnetic Correlations in Iron-Based Superconductors journal, September 2010

Polarization anisotropy of X-ray atomic factors and `forbidden' resonant reflections journal, August 2005

Title: Symmetry of reentrant tetragonal phase in ${Ba}_{1 - x} {Na}_{x} {Fe}_{2} {As}_{2}$ : Magnetic versus orbital ordering mechanism

Orbital ordering and unfrustrated $(π, 0)$ magnetism from degenerate double exchange in the iron pnictides
journal, July 2010

Finite-temperature spin dynamics and phase transitions in spin-orbital models
journal, November 2009

Microscopically derived Ginzburg-Landau theory for magnetic order in the iron pnictides
journal, December 2011

A Guide to Electronic Multipoles in Photon Scattering and Absorption
journal, February 2013

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

Space group symmetry, spin-orbit coupling, and the low-energy effective Hamiltonian for iron-based superconductors
journal, October 2013

Nematic Susceptibility of Hole-Doped and Electron-Doped ${Ba F e}_{2} {As}_{2}$ Iron-Based Superconductors from Shear Modulus Measurements
journal, January 2014

Magnetic order close to superconductivity in the iron-based layered LaO1-xF x FeAs systems
journal, May 2008

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

Coexistence of Competing Antiferromagnetic and Superconducting Phases in the Underdoped $Ba ({Fe}_{0.953} {Co}_{0.047})_{2} {As}_{2}$ Compound Using X-ray and Neutron Scattering Techniques
journal, August 2009

Magnetic degeneracy and hidden metallicity of the spin-density-wave state in ferropnictides
journal, January 2010

Analysis of azimuthal-angle scans in resonant x-ray Bragg diffraction and parity even and odd atomic multipoles in the multiferroic modification of the terbium manganate ${TbMnO}_{3}$
journal, January 2009

Spectroscopic Imaging Scanning Tunneling Microscopy as a Probe of Orbital Structures and Ordering
journal, October 2009

Superconductivity at 38 K in the Iron Arsenide $({Ba}_{1 - x} K_{x}) {Fe}_{2} {As}_{2}$
journal, September 2008

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

Orbital ordering induces structural phase transition and the resistivity anomaly in iron pnictides
journal, December 2009

Ba _{1- x} Rb _x Fe ₂ As ₂ and Generic Phase Behavior of Hole-doped 122-Type Superconductors : Ba
journal, February 2014

Tensor X-ray optical properties of the bromate ion
journal, March 1985

Competing Orders in FeAs Layers
journal, October 2008

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

Magnetic symmetry in the Bilbao Crystallographic Server: a computer program to provide systematic absences of magnetic neutron diffraction
journal, November 2012

Measurement of the elastoresistivity coefficients of the underdoped iron arsenide Ba(Fe $_{0.975}$ Co $_{0.025}$ ) $_{2}$ As $_{2}$
journal, August 2013

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

Orbital-Dependent Modifications of Electronic Structure across the Magnetostructural Transition in ${BaFe}_{2} {As}_{2}$
journal, February 2010

What drives nematic order in iron-based superconductors?
journal, January 2014

Triple- $\vec{q}$ Octupolar Ordering in ${N p O}_{2}$
journal, October 2002

Spin-orbital frustrations and anomalous metallic state in iron-pnictide superconductors
journal, February 2009

Electronic properties of crystalline materials observed in X-ray diffraction
journal, May 2005

Preemptive nematic order, pseudogap, and orbital order in the iron pnictides
journal, January 2012

Character of the structural and magnetic phase transitions in the parent and electron-doped BaFe $_{2}$ As $_{2}$ compounds
journal, April 2011

ISODISPLACE : a web-based tool for exploring structural distortions
journal, July 2006

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

Unified Picture for Magnetic Correlations in Iron-Based Superconductors
journal, September 2010

Polarization anisotropy of X-ray atomic factors and `forbidden' resonant reflections
journal, August 2005