Bandwidth and Electron Correlation-Tuned Superconductivity in Rb0.8Fe2(Se1-zSz)2

Yi, M.; Wang, Meng; Kemper, A. F.; Mo, S. -K.; Hussain, Z.; Bourret-Courchesne, E.; Lanzara, A.; Hashimoto, M.; Lu, D. H.; Shen, Z. -X.; Birgeneau, R. J.

doi:10.1103/PhysRevLett.115.256403

Title: Bandwidth and Electron Correlation-Tuned Superconductivity in ${Rb}_{0.8} {Fe}_{2} ({Se}_{1 - z} S_{z})_{2}$

Abstract

Here, we present a systematic angle-resolved photoemission spectroscopy study of the substitution dependence of the electronic structure of Rb_0.8Fe₂(Se_1-zS_z)₂ (z = 0, 0.5, 1), where superconductivity is continuously suppressed into a metallic phase. Going from the nonsuperconducting Rb_0.8Fe₂S₂ to superconducting Rb_0.8Fe₂Se₂, we observe little change of the Fermi surface topology, but a reduction of the overall bandwidth by a factor of 2. Hence, for these heavily electron-doped iron chalcogenides, we have identified electron correlation as explicitly manifested in the quasiparticle bandwidth to be the important tuning parameter for superconductivity, and that moderate correlation is essential to achieving high T_C.

Authors:

Yi, M. ^[1]; Wang, Meng ^[1]; Kemper, A. F. ^[2]; Mo, S. -K. ^[3]; Hussain, Z. ^[3]; Bourret-Courchesne, E. ^[4]; Lanzara, A. ^[5]; Hashimoto, M. ^[6]; Lu, D. H. ^[6]; Shen, Z. -X. ^[7]; Birgeneau, R. J. ^[8]

Univ. of California, Berkeley, CA (United States). Dept. of Physics
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Computational Research Division
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division
Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division
SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials, Dept. of Physics and Applied Physics
Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division; Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering

Publication Date:: Tue Dec 15 00:00:00 EST 2015

Research Org.:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

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

OSTI Identifier:: 1393002

Alternate Identifier(s):: OSTI ID: 1229909

Grant/Contract Number:: AC02-05CH11231; AC03-76SF008

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 115; Journal Issue: 25; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Yi, M., Wang, Meng, Kemper, A. F., Mo, S. -K., Hussain, Z., Bourret-Courchesne, E., Lanzara, A., Hashimoto, M., Lu, D. H., Shen, Z. -X., and Birgeneau, R. J. Bandwidth and Electron Correlation-Tuned Superconductivity in Rb0.8Fe2(Se1-zSz)2.  United States: N. p., 2015. 
Web.  doi:10.1103/PhysRevLett.115.256403.

Copy to clipboard


                    Yi, M., Wang, Meng, Kemper, A. F., Mo, S. -K., Hussain, Z., Bourret-Courchesne, E., Lanzara, A., Hashimoto, M., Lu, D. H., Shen, Z. -X., & Birgeneau, R. J. Bandwidth and Electron Correlation-Tuned Superconductivity in Rb0.8Fe2(Se1-zSz)2.  United States.  https://doi.org/10.1103/PhysRevLett.115.256403

Copy to clipboard


                    Yi, M., Wang, Meng, Kemper, A. F., Mo, S. -K., Hussain, Z., Bourret-Courchesne, E., Lanzara, A., Hashimoto, M., Lu, D. H., Shen, Z. -X., and Birgeneau, R. J. Tue .  
"Bandwidth and Electron Correlation-Tuned Superconductivity in Rb0.8Fe2(Se1-zSz)2".  United States.  https://doi.org/10.1103/PhysRevLett.115.256403.  https://www.osti.gov/servlets/purl/1393002.

Copy to clipboard


                    
@article{osti_1393002,

  title        = {Bandwidth and Electron Correlation-Tuned Superconductivity in Rb0.8Fe2(Se1-zSz)2},

  author       = {Yi, M. and Wang, Meng and Kemper, A. F. and Mo, S. -K. and Hussain, Z. and Bourret-Courchesne, E. and Lanzara, A. and Hashimoto, M. and Lu, D. H. and Shen, Z. -X. and Birgeneau, R. J.},

  abstractNote = {Here, we present a systematic angle-resolved photoemission spectroscopy study of the substitution dependence of the electronic structure of Rb0.8Fe2(Se1-zSz)2 (z = 0, 0.5, 1), where superconductivity is continuously suppressed into a metallic phase. Going from the nonsuperconducting Rb0.8Fe2S2 to superconducting Rb0.8Fe2Se2, we observe little change of the Fermi surface topology, but a reduction of the overall bandwidth by a factor of 2. Hence, for these heavily electron-doped iron chalcogenides, we have identified electron correlation as explicitly manifested in the quasiparticle bandwidth to be the important tuning parameter for superconductivity, and that moderate correlation is essential to achieving high TC.},

  doi          = {10.1103/PhysRevLett.115.256403},

  journal      = {Physical Review Letters},

  number       = 25,

  volume       = 115,

  place        = {United States},

  year         = {Tue Dec 15 00:00:00 EST 2015},

  month        = {Tue Dec 15 00:00:00 EST 2015}

}

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/PhysRevLett.115.256403

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 15 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Generalized Gradient Approximation Made Simple
journal, October 1996

Perdew, John P.; Burke, Kieron; Ernzerhof, Matthias
Physical Review Letters, Vol. 77, Issue 18, p. 3865-3868
DOI: 10.1103/PhysRevLett.77.3865

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

Electronic states and phases of KxC60 from photoemission and X-ray absorption spectroscopy
journal, August 1991

Chen, C. T.; Tjeng, L. H.; Rudolf, P.
Nature, Vol. 352, Issue 6336
DOI: 10.1038/352603a0

Nodeless superconducting gap in AxFe2Se2 (A=K,Cs) revealed by angle-resolved photoemission spectroscopy
journal, February 2011

Zhang, Y.; Yang, L. X.; Xu, M.
Nature Materials, Vol. 10, Issue 4
DOI: 10.1038/nmat2981

Observation of universal strong orbital-dependent correlation effects in iron chalcogenides
journal, July 2015

Yi, M.; Liu, Z-K; Zhang, Y.
Nature Communications, Vol. 6, Issue 1
DOI: 10.1038/ncomms8777

Extraordinary Doping Effects on Quasiparticle Scattering and Bandwidth in Iron-Based Superconductors
journal, September 2014

Ye, Z. R.; Zhang, Y.; Chen, F.
Physical Review X, Vol. 4, Issue 3
DOI: 10.1103/PhysRevX.4.031041

Structural Phase Separation in K _0.8 Fe _{1.6+ x} Se ₂ Superconductors
journal, August 2012

Wang, Zhi-Wei; Wang, Zhen; Song, Yuan-Jun
The Journal of Physical Chemistry C, Vol. 116, Issue 33
DOI: 10.1021/jp306310m

Two spatially separated phases in semiconducting ${Rb}_{0.8} {Fe}_{1.5} S_{2}$
journal, September 2014

Wang, Meng; Tian, Wei; Valdivia, P.
Physical Review B, Vol. 90, Issue 12
DOI: 10.1103/PhysRevB.90.125148

Strong Electronic Correlations in Iron Pnictides: Comparison of Optical Spectra for BaFe ₂ As ₂ -Related Compounds
journal, October 2014

Nakajima, Masamichi; Ishida, Shigeyuki; Tanaka, Takahide
Journal of the Physical Society of Japan, Vol. 83, Issue 10
DOI: 10.7566/JPSJ.83.104703

Mott Transition in Modulated Lattices and Parent Insulator of $(K, Tl)_{y} {Fe}_{x} {Se}_{2}$ Superconductors
journal, May 2011

Yu, Rong; Zhu, Jian-Xin; Si, Qimiao
Physical Review Letters, Vol. 106, Issue 18
DOI: 10.1103/PhysRevLett.106.186401

Electronic Identification of the Parental Phases and Mesoscopic Phase Separation of $K_{x} {Fe}_{2 - y} {Se}_{2}$ Superconductors
journal, December 2011

Chen, F.; Xu, M.; Ge, Q. Q.
Physical Review X, Vol. 1, Issue 2
DOI: 10.1103/PhysRevX.1.021020

Large Temperature Dependence of the Number of Carriers in Co-Doped ${BaFe}_{2} {As}_{2}$
journal, April 2013

Brouet, V.; Lin, Ping-Hui; Texier, Y.
Physical Review Letters, Vol. 110, Issue 16
DOI: 10.1103/PhysRevLett.110.167002

Phase Diagram of $K_{x} {Fe}_{2 - y} {Se}_{2 - z} S_{z}$ and the Suppression of its Superconducting State by an $Fe 2 − Se / S$ Tetrahedron Distortion
journal, September 2011

Lei, Hechang; Abeykoon, Milinda; Bozin, Emil S.
Physical Review Letters, Vol. 107, Issue 13
DOI: 10.1103/PhysRevLett.107.137002

Spin waves and spatially anisotropic exchange interactions in the $S = 2$ stripe antiferromagnet ${Rb}_{0.8} {Fe}_{1.5} S_{2}$
journal, July 2015

Wang, Meng; Valdivia, P.; Yi, Ming
Physical Review B, Vol. 92, Issue 4
DOI: 10.1103/PhysRevB.92.041109

Strongly Correlated Superconductivity
journal, June 2002

Capone, M.
Science, Vol. 296, Issue 5577
DOI: 10.1126/science.1071122

A Novel Large Moment Antiferromagnetic Order in K _0.8 Fe _1.6 Se ₂ Superconductor
journal, August 2011

Bao, Wei; Huang, Qing-Zhen; Chen, Gen-Fu
Chinese Physics Letters, Vol. 28, Issue 8
DOI: 10.1088/0256-307X/28/8/086104

Observation of Temperature-Induced Crossover to an Orbital-Selective Mott Phase in $A_{x} {Fe}_{2 − y} {Se}_{2}$ ( $A = K$ , Rb) Superconductors
journal, February 2013

Yi, M.; Lu, D. H.; Yu, R.
Physical Review Letters, Vol. 110, Issue 6
DOI: 10.1103/PhysRevLett.110.067003

Coexistence of superconductivity and magnetism in K $_{x}$ Fe $_{2 - y}$ Se $_{2 - z}$ S $_{z}$ ( $z$ $=$ 0,0.4)
journal, November 2011

Li, L.; Yang, Z. R.; Zhang, Z. T.
Physical Review B, Vol. 84, Issue 17
DOI: 10.1103/PhysRevB.84.174501

Fermi-Surface Shrinking and Interband Coupling in Iron-Based Pnictides
journal, July 2009

Ortenzi, L.; Cappelluti, E.; Benfatto, L.
Physical Review Letters, Vol. 103, Issue 4
DOI: 10.1103/PhysRevLett.103.046404

Correlation between superconductivity and antiferromagnetism in Rb $_{0.8}$ Fe $_{2 - y}$ Se $_{2 - x}$ Te $_{x}$ single crystals
journal, May 2012

Gu, Dachun; Sun, Liling; Wu, Qi
Physical Review B, Vol. 85, Issue 17
DOI: 10.1103/PhysRevB.85.174523

Absence of a Holelike Fermi Surface for the Iron-Based $K_{0.8} {Fe}_{1.7} {Se}_{2}$ Superconductor Revealed by Angle-Resolved Photoemission Spectroscopy
journal, May 2011

Qian, T.; Wang, X. -P.; Jin, W. -C.
Physical Review Letters, Vol. 106, Issue 18
DOI: 10.1103/PhysRevLett.106.187001

Neutron-Diffraction Measurements of an Antiferromagnetic Semiconducting Phase in the Vicinity of the High-Temperature Superconducting State of $K_{x} {Fe}_{2 - y} {Se}_{2}$
journal, December 2012

Zhao, Jun; Cao, Huibo; Bourret-Courchesne, E.
Physical Review Letters, Vol. 109, Issue 26
DOI: 10.1103/PhysRevLett.109.267003

NMR Study in the Iron-Selenide ${Rb}_{0.74} {Fe}_{1.6} {Se}_{2}$ : Determination of the Superconducting Phase as Iron Vacancy-Free ${Rb}_{0.3} {Fe}_{2} {Se}_{2}$
journal, June 2012

Texier, Y.; Deisenhofer, J.; Tsurkan, V.
Physical Review Letters, Vol. 108, Issue 23
DOI: 10.1103/PhysRevLett.108.237002

Antiferromagnetically driven electronic correlations in iron pnictides and cuprates
journal, August 2009

Zhai, Hui; Wang, Fa; Lee, Dung-Hai
Physical Review B, Vol. 80, Issue 6
DOI: 10.1103/PhysRevB.80.064517

Polymorphism control of superconductivity and magnetism in Cs₃C₆₀ close to the Mott transition
journal, May 2010

Ganin, Alexey Y.; Takabayashi, Yasuhiro; Jeglič, Peter
Nature, Vol. 466, Issue 7303, p. 221-225
DOI: 10.1038/nature09120

Dynamic competition between spin-density wave order and superconductivity in underdoped Ba1−xKxFe2As2
journal, April 2014

Yi, M.; Zhang, Y.; Liu, Z. -K.
Nature Communications, Vol. 5, Issue 1
DOI: 10.1038/ncomms4711

Distinct Fermi Surface Topology and Nodeless Superconducting Gap in a $({Tl}_{0.58} {Rb}_{0.42}) {Fe}_{1.72} {Se}_{2}$ Superconductor
journal, March 2011

Mou, Daixiang; Liu, Shanyu; Jia, Xiaowen
Physical Review Letters, Vol. 106, Issue 10
DOI: 10.1103/PhysRevLett.106.107001

Intrinsic crystal phase separation in the antiferromagnetic superconductor Rb _y Fe _{2− x} Se ₂ : a diffraction study
journal, October 2012

Yu Pomjakushin, V.; Krzton-Maziopa, A.; Pomjakushina, E. V.
Journal of Physics: Condensed Matter, Vol. 24, Issue 43
DOI: 10.1088/0953-8984/24/43/435701

Electronic structure of the ${BaFe}_{2} {As}_{2}$ family of iron-pnictide superconductors
journal, July 2009

Yi, M.; Lu, D. H.; Analytis, J. G.
Physical Review B, Vol. 80, Issue 2
DOI: 10.1103/PhysRevB.80.024515

Band Narrowing and Mott Localization in Iron Oxychalcogenides ${La}_{2} O_{2} {Fe}_{2} O (Se, S)_{2}$
journal, May 2010

Zhu, Jian-Xin; Yu, Rong; Wang, Hangdong
Physical Review Letters, Vol. 104, Issue 21
DOI: 10.1103/PhysRevLett.104.216405

Theory for superconductivity in (Tl,K)Fe _x Se ₂ as a doped Mott insulator
journal, June 2011

Zhou, Yi; Xu, Dong-Hui; Zhang, Fu-Chun
EPL (Europhysics Letters), Vol. 95, Issue 1
DOI: 10.1209/0295-5075/95/17003

Unconventional Mott transition in K $_{x}$ Fe $_{2 - y}$ Se $_{2}$
journal, December 2011

Craco, L.; Laad, M. S.; Leoni, S.
Physical Review B, Vol. 84, Issue 22
DOI: 10.1103/PhysRevB.84.224520

Theory for superconductivity in (Tl,K)Fe$_x$Se$_2$ as a doped Mott insulator
text, January 2011

Zhou, Yi; Xu, Dong-Hui; Zhang, Fu-Chun
arXiv
DOI: 10.48550/arxiv.1101.4462

Large temperature dependence of the number of carriers in Co-doped BaFe2As2
text, January 2013

Brouet, V.; Lin, Ping-Hui; Texier, Y.
arXiv
DOI: 10.48550/arxiv.1301.6891

Works referencing / citing this record:

Iron-Based Chalcogenide Spin Ladder BaFe2X3 (X = Se,S)
journal, November 2019

Wu, Shan; Frandsen, Benjamin A.; Wang, Meng
Journal of Superconductivity and Novel Magnetism, Vol. 33, Issue 1
DOI: 10.1007/s10948-019-05304-4

High-temperature superconductivity in iron pnictides and chalcogenides
journal, March 2016

Si, Qimiao; Yu, Rong; Abrahams, Elihu
Nature Reviews Materials, Vol. 1, Issue 4
DOI: 10.1038/natrevmats.2016.17

Transition from Sign-Reversed to Sign-Preserved Cooper-Pairing Symmetry in Sulfur-Doped Iron Selenide Superconductors
journal, May 2016

Wang, Qisi; Park, J. T.; Feng, Yu
Physical Review Letters, Vol. 116, Issue 19
DOI: 10.1103/physrevlett.116.197004

High Temperature Superconductivity in Iron Pnictides and Chalcogenides
text, January 2016

Si, Qimiao; Yu, Rong; Abrahams, Elihu
arXiv
DOI: 10.48550/arxiv.1604.03566

Transition from sign-reversed to sign-preserved Cooper-pairing symmetry in sulfur-doped iron selenide superconductors
text, January 2016

Wang, Qisi; Park, J. T.; Feng, Yu
arXiv
DOI: 10.48550/arxiv.1604.06222

Similar Records in DOE PAGES and OSTI.GOV collections:

Bandwidth and Electron Correlation-Tuned Superconductivity in ${Rb}_{0.8} {Fe}_{2} ({Se}_{1 - z} S_{z})_{2}$

Journal Article Yi, M. ; Wang, Meng ; Kemper, A. F. ; ... - Physical Review Letters

We present a systematic angle-resolved photoemission spectroscopy study of the substitution dependence of the electronic structure of Rb_0.8Fe₂(Se_1-zS_z)₂ (z=0, 0.5, 1), where superconductivity is continuously suppressed into a metallic phase. Going from the nonsuperconducting Rb_0.8Fe₂S₂ to superconducting Rb_0.8Fe₂Se₂, we observe little change of the Fermi surface topology, but a reduction of the overall bandwidth by a factor of 2. Hence, for these heavily electron-doped iron chalcogenides, we have identified electron correlation as explicitly manifested in the quasiparticle bandwidth to be the important tuning parameter for superconductivity, and that moderate correlation is essential to achieving high T_C.
https://doi.org/10.1103/PhysRevLett.115.256403

Full Text Available
Two spatially separated phases in semiconducting ${Rb}_{0.8} {Fe}_{1.5} S_{2}$

Journal Article Wang, Meng ; Tian, Wei ; Valdivia, P. ; ... - Physical Review. B, Condensed Matter and Materials Physics

We report neutron scattering and transport measurements on semiconducting Rb_0.8Fe_1.5S₂, a compound isostructural and isoelectronic to the well-studied A_0.8Fe_ySe₂(A = K, Rb, Cs, Tl/K) superconducting systems. Both resistivity and DC susceptibility measurements reveal a magnetic phase transition at T = 275 K. Neutron diffraction studies show that the 275 K transition originates from a phase with rhombic iron vacancy order which exhibits an in-plane stripe antiferromagnetic ordering below 275 K. In addition, the stripe antiferromagnetic phase interdigitates mesoscopically with an ubiquitous phase with √5 x√5 iron vacancy order. This phase has a magnetic transition at T_N = 425 K andmore »« less
Cited by 19
https://doi.org/10.1103/PhysRevB.90.125148

Full Text Available
Effect of biaxial strain on the phase transitions of $Ca ({Fe}_{1 - x} {Co}_{x})_{2} {As}_{2}$

Journal Article Bohmer, A. E. ; Sapkota, A. ; Kreyssig, A. ; ... - Physical Review Letters

Here, we study the effect of applied strain as a physical control parameter for the phase transitions of Ca ( Fe_{1more » $$-$$x}Co_x)₂As₂ using resistivity, magnetization, x-ray diffraction, and ⁵⁷Fe Mössbauer spectroscopy. Biaxial strain, namely, compression of the basal plane of the tetragonal unit cell, is created through firm bonding of samples to a rigid substrate via differential thermal expansion. This strain is shown to induce a magnetostructural phase transition in originally paramagnetic samples, and superconductivity in previously nonsuperconducting ones. Lastly, the magnetostructural transition is gradual as a consequence of using strain instead of pressure or stress as a tuning parameter.« less
Cited by 20
https://doi.org/10.1103/PhysRevLett.118.107002

Full Text Available
Mott localization in a pure stripe antiferromagnet ${Rb}_{1 - δ} {Fe}_{1.5 - σ} S_{2}$

Journal Article Wang, Meng ; Yi, Ming ; Cao, Huibo ; ... - Physical Review. B, Condensed Matter and Materials Physics

A combination of neutron diffraction and angle-resolved photoemission spectroscopy measurements on a pure antiferromagnetic stripe Rb_1-δFe_1.5-σS₂ is reported. A neutron diffraction experiment on a powder sample shows that a 98% volume fraction of the sample is in the antiferromagnetic stripe phase with rhombic iron vacancy order and a refined composition of Rb_0.66Fe_1.36S₂, and that only 2% of the sample is in the block antiferromagnetic phase with √5×√5 iron vacancy order. Furthermore, a neutron diffraction experiment on a single crystal shows that there is only a single phase with the stripe antiferromagnetic order with the refined composition of Rb_0.78Fe_1.35S₂, while themore »« less
https://doi.org/10.1103/PhysRevB.92.121101
Disappearance of static magnetic order and evolution of spin fluctuations in ${Fe}_{1 + δ} {Se}_{x} {Te}_{1 - x}$

Journal Article Xu, Zhijun ; Wen, Jinsheng ; Xu, Guangyong ; ... - Physical Review. B, Condensed Matter and Materials Physics

We report neutron-scattering studies on static magnetic orders and spin excitations in the Fe-based chalcogenide system Fe 1 + δ Se x Te 1 - x with different Fe and Se compositions. Short-range static magnetic order with an in-plane wave vector near the (0.5,0) (using the two-Fe unit cell), together with strong low-energy magnetic excitations is found in all nonsuperconducting samples for Se doping up to 45%. When the static order disappears and bulk superconductivity emerges, the spectral weight of the magnetic excitations shifts to the region of reciprocal space near the in-plane wave vector (0.5, 0.5), corresponding to “collinear”more »« less
https://doi.org/10.1103/PhysRevB.82.104525

Similar Records

Title: Bandwidth and Electron Correlation-Tuned Superconductivity in Rb 0.8 Fe 2 ( Se 1 - z S z ) 2

Abstract

Citation Formats

Generalized Gradient Approximation Made Simple journal, October 1996

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

Electronic states and phases of KxC60 from photoemission and X-ray absorption spectroscopy journal, August 1991

Nodeless superconducting gap in AxFe2Se2 (A=K,Cs) revealed by angle-resolved photoemission spectroscopy journal, February 2011

Observation of universal strong orbital-dependent correlation effects in iron chalcogenides journal, July 2015

Extraordinary Doping Effects on Quasiparticle Scattering and Bandwidth in Iron-Based Superconductors journal, September 2014

Structural Phase Separation in K 0.8 Fe 1.6+ x Se 2 Superconductors journal, August 2012

Two spatially separated phases in semiconducting Rb 0.8 Fe 1.5 S 2 journal, September 2014

Strong Electronic Correlations in Iron Pnictides: Comparison of Optical Spectra for BaFe 2 As 2 -Related Compounds journal, October 2014

Mott Transition in Modulated Lattices and Parent Insulator of ( K , Tl ) y Fe x Se 2 Superconductors journal, May 2011

Electronic Identification of the Parental Phases and Mesoscopic Phase Separation of K x Fe 2 − y Se 2 Superconductors journal, December 2011

Large Temperature Dependence of the Number of Carriers in Co-Doped BaFe 2 As 2 journal, April 2013

Phase Diagram of K x Fe 2 − y Se 2 − z S z and the Suppression of its Superconducting State by an Fe 2 − Se / S Tetrahedron Distortion journal, September 2011

Spin waves and spatially anisotropic exchange interactions in the S = 2 stripe antiferromagnet Rb 0.8 Fe 1.5 S 2 journal, July 2015

Strongly Correlated Superconductivity journal, June 2002

A Novel Large Moment Antiferromagnetic Order in K 0.8 Fe 1.6 Se 2 Superconductor journal, August 2011

Observation of Temperature-Induced Crossover to an Orbital-Selective Mott Phase in A x Fe 2 − y Se 2 ( A = K , Rb) Superconductors journal, February 2013

Coexistence of superconductivity and magnetism in K x Fe 2 − y Se 2 − z S z ( z = 0,0.4) journal, November 2011

Fermi-Surface Shrinking and Interband Coupling in Iron-Based Pnictides journal, July 2009

Correlation between superconductivity and antiferromagnetism in Rb 0.8 Fe 2 − y Se 2 − x Te x single crystals journal, May 2012

Absence of a Holelike Fermi Surface for the Iron-Based K 0.8 Fe 1.7 Se 2 Superconductor Revealed by Angle-Resolved Photoemission Spectroscopy journal, May 2011

Neutron-Diffraction Measurements of an Antiferromagnetic Semiconducting Phase in the Vicinity of the High-Temperature Superconducting State of K x Fe 2 − y Se 2 journal, December 2012

NMR Study in the Iron-Selenide Rb 0.74 Fe 1.6 Se 2 : Determination of the Superconducting Phase as Iron Vacancy-Free Rb 0.3 Fe 2 Se 2 journal, June 2012

Antiferromagnetically driven electronic correlations in iron pnictides and cuprates journal, August 2009

Polymorphism control of superconductivity and magnetism in Cs3C60 close to the Mott transition journal, May 2010

Dynamic competition between spin-density wave order and superconductivity in underdoped Ba1−xKxFe2As2 journal, April 2014

Distinct Fermi Surface Topology and Nodeless Superconducting Gap in a ( Tl 0.58 Rb 0.42 ) Fe 1.72 Se 2 Superconductor journal, March 2011

Intrinsic crystal phase separation in the antiferromagnetic superconductor Rb y Fe 2− x Se 2 : a diffraction study journal, October 2012

Electronic structure of the BaFe 2 As 2 family of iron-pnictide superconductors journal, July 2009

Band Narrowing and Mott Localization in Iron Oxychalcogenides La 2 O 2 Fe 2 O ( Se , S ) 2 journal, May 2010

Theory for superconductivity in (Tl,K)Fe x Se 2 as a doped Mott insulator journal, June 2011

Unconventional Mott transition in K x Fe 2 − y Se 2 journal, December 2011

Theory for superconductivity in (Tl,K)Fe$_x$Se$_2$ as a doped Mott insulator text, January 2011

Large temperature dependence of the number of carriers in Co-doped BaFe2As2 text, January 2013

Iron-Based Chalcogenide Spin Ladder BaFe2X3 (X = Se,S) journal, November 2019

High-temperature superconductivity in iron pnictides and chalcogenides journal, March 2016

Transition from Sign-Reversed to Sign-Preserved Cooper-Pairing Symmetry in Sulfur-Doped Iron Selenide Superconductors journal, May 2016

High Temperature Superconductivity in Iron Pnictides and Chalcogenides text, January 2016

Transition from sign-reversed to sign-preserved Cooper-pairing symmetry in sulfur-doped iron selenide superconductors text, January 2016

Title: Bandwidth and Electron Correlation-Tuned Superconductivity in ${Rb}_{0.8} {Fe}_{2} ({Se}_{1 - z} S_{z})_{2}$

Generalized Gradient Approximation Made Simple
journal, October 1996

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

Electronic states and phases of KxC60 from photoemission and X-ray absorption spectroscopy
journal, August 1991

Nodeless superconducting gap in AxFe2Se2 (A=K,Cs) revealed by angle-resolved photoemission spectroscopy
journal, February 2011

Observation of universal strong orbital-dependent correlation effects in iron chalcogenides
journal, July 2015

Extraordinary Doping Effects on Quasiparticle Scattering and Bandwidth in Iron-Based Superconductors
journal, September 2014

Structural Phase Separation in K _0.8 Fe _{1.6+ x} Se ₂ Superconductors
journal, August 2012

Two spatially separated phases in semiconducting ${Rb}_{0.8} {Fe}_{1.5} S_{2}$
journal, September 2014

Strong Electronic Correlations in Iron Pnictides: Comparison of Optical Spectra for BaFe ₂ As ₂ -Related Compounds
journal, October 2014

Mott Transition in Modulated Lattices and Parent Insulator of $(K, Tl)_{y} {Fe}_{x} {Se}_{2}$ Superconductors
journal, May 2011

Electronic Identification of the Parental Phases and Mesoscopic Phase Separation of $K_{x} {Fe}_{2 - y} {Se}_{2}$ Superconductors
journal, December 2011

Large Temperature Dependence of the Number of Carriers in Co-Doped ${BaFe}_{2} {As}_{2}$
journal, April 2013

Phase Diagram of $K_{x} {Fe}_{2 - y} {Se}_{2 - z} S_{z}$ and the Suppression of its Superconducting State by an $Fe 2 − Se / S$ Tetrahedron Distortion
journal, September 2011

Spin waves and spatially anisotropic exchange interactions in the $S = 2$ stripe antiferromagnet ${Rb}_{0.8} {Fe}_{1.5} S_{2}$
journal, July 2015

Strongly Correlated Superconductivity
journal, June 2002

A Novel Large Moment Antiferromagnetic Order in K _0.8 Fe _1.6 Se ₂ Superconductor
journal, August 2011

Observation of Temperature-Induced Crossover to an Orbital-Selective Mott Phase in $A_{x} {Fe}_{2 − y} {Se}_{2}$ ( $A = K$ , Rb) Superconductors
journal, February 2013

Coexistence of superconductivity and magnetism in K $_{x}$ Fe $_{2 - y}$ Se $_{2 - z}$ S $_{z}$ ( $z$ $=$ 0,0.4)
journal, November 2011

Fermi-Surface Shrinking and Interband Coupling in Iron-Based Pnictides
journal, July 2009

Correlation between superconductivity and antiferromagnetism in Rb $_{0.8}$ Fe $_{2 - y}$ Se $_{2 - x}$ Te $_{x}$ single crystals
journal, May 2012

Absence of a Holelike Fermi Surface for the Iron-Based $K_{0.8} {Fe}_{1.7} {Se}_{2}$ Superconductor Revealed by Angle-Resolved Photoemission Spectroscopy
journal, May 2011

Neutron-Diffraction Measurements of an Antiferromagnetic Semiconducting Phase in the Vicinity of the High-Temperature Superconducting State of $K_{x} {Fe}_{2 - y} {Se}_{2}$
journal, December 2012

NMR Study in the Iron-Selenide ${Rb}_{0.74} {Fe}_{1.6} {Se}_{2}$ : Determination of the Superconducting Phase as Iron Vacancy-Free ${Rb}_{0.3} {Fe}_{2} {Se}_{2}$
journal, June 2012

Antiferromagnetically driven electronic correlations in iron pnictides and cuprates
journal, August 2009

Polymorphism control of superconductivity and magnetism in Cs₃C₆₀ close to the Mott transition
journal, May 2010

Dynamic competition between spin-density wave order and superconductivity in underdoped Ba1−xKxFe2As2
journal, April 2014

Distinct Fermi Surface Topology and Nodeless Superconducting Gap in a $({Tl}_{0.58} {Rb}_{0.42}) {Fe}_{1.72} {Se}_{2}$ Superconductor
journal, March 2011

Intrinsic crystal phase separation in the antiferromagnetic superconductor Rb _y Fe _{2− x} Se ₂ : a diffraction study
journal, October 2012

Electronic structure of the ${BaFe}_{2} {As}_{2}$ family of iron-pnictide superconductors
journal, July 2009

Band Narrowing and Mott Localization in Iron Oxychalcogenides ${La}_{2} O_{2} {Fe}_{2} O (Se, S)_{2}$
journal, May 2010

Theory for superconductivity in (Tl,K)Fe _x Se ₂ as a doped Mott insulator
journal, June 2011

Unconventional Mott transition in K $_{x}$ Fe $_{2 - y}$ Se $_{2}$
journal, December 2011

Theory for superconductivity in (Tl,K)Fe$_x$Se$_2$ as a doped Mott insulator
text, January 2011

Large temperature dependence of the number of carriers in Co-doped BaFe2As2
text, January 2013

Iron-Based Chalcogenide Spin Ladder BaFe2X3 (X = Se,S)
journal, November 2019

High-temperature superconductivity in iron pnictides and chalcogenides
journal, March 2016

Transition from Sign-Reversed to Sign-Preserved Cooper-Pairing Symmetry in Sulfur-Doped Iron Selenide Superconductors
journal, May 2016

High Temperature Superconductivity in Iron Pnictides and Chalcogenides
text, January 2016

Transition from sign-reversed to sign-preserved Cooper-pairing symmetry in sulfur-doped iron selenide superconductors
text, January 2016