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 ${Rb}_{0.8} {Fe}_{2} ({Se}_{1 - z} S_{z})_{2}$

Journal Article · Tue Dec 01 00:00:00 EST 2015 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.115.256403· OSTI ID:1263426

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.

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.

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Research Organization:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

DOE Contract Number:: AC02-76SF00515

OSTI ID:: 1263426

Report Number(s):: SLAC-PUB-16612; PRLTAO; arXiv:1505.06636

Journal Information:: Physical Review Letters, Vol. 115, Issue 25; ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

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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 Lei, Hechang; Abeykoon, Milinda; Bozin, Emil S. Physical Review Letters, Vol. 107, Issue 13 https://doi.org/10.1103/physrevlett.107.137002	journal	September 2011
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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 Qian, T.; Wang, X. -P.; Jin, W. -C. Physical Review Letters, Vol. 106, Issue 18 https://doi.org/10.1103/PhysRevLett.106.187001	journal	May 2011
A Novel Large Moment Antiferromagnetic Order in K _0.8 Fe _1.6 Se ₂ Superconductor Bao, Wei; Huang, Qing-Zhen; Chen, Gen-Fu Chinese Physics Letters, Vol. 28, Issue 8 https://doi.org/10.1088/0256-307X/28/8/086104	journal	August 2011
Mott Transition in Modulated Lattices and Parent Insulator of $(K, Tl)_{y} {Fe}_{x} {Se}_{2}$ Superconductors Yu, Rong; Zhu, Jian-Xin; Si, Qimiao Physical Review Letters, Vol. 106, Issue 18 https://doi.org/10.1103/PhysRevLett.106.186401	journal	May 2011
Unconventional Mott transition in K $_{x}$ Fe $_{2 - y}$ Se $_{2}$ Craco, L.; Laad, M. S.; Leoni, S. Physical Review B, Vol. 84, Issue 22 https://doi.org/10.1103/PhysRevB.84.224520	journal	December 2011
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 Lei, Hechang; Abeykoon, Milinda; Bozin, Emil S. Physical Review Letters, Vol. 107, Issue 13 https://doi.org/10.1103/PhysRevLett.107.137002	journal	September 2011
Coexistence of superconductivity and magnetism in K $_{x}$ Fe $_{2 - y}$ Se $_{2 - z}$ S $_{z}$ ( $z$ $=$ 0,0.4) Li, L.; Yang, Z. R.; Zhang, Z. T. Physical Review B, Vol. 84, Issue 17 https://doi.org/10.1103/PhysRevB.84.174501	journal	November 2011
Two spatially separated phases in semiconducting ${Rb}_{0.8} {Fe}_{1.5} S_{2}$ Wang, Meng; Tian, Wei; Valdivia, P. Physical Review B, Vol. 90, Issue 12 https://doi.org/10.1103/PhysRevB.90.125148	journal	September 2014
Generalized Gradient Approximation Made Simple Perdew, John P.; Burke, Kieron; Ernzerhof, Matthias Physical Review Letters, Vol. 77, Issue 18, p. 3865-3868 https://doi.org/10.1103/PhysRevLett.77.3865	journal	October 1996
Observation of Temperature-Induced Crossover to an Orbital-Selective Mott Phase in $A_{x} {Fe}_{2 − y} {Se}_{2}$ ( $A = K$ , Rb) Superconductors Yi, M.; Lu, D. H.; Yu, R. Physical Review Letters, Vol. 110, Issue 6 https://doi.org/10.1103/PhysRevLett.110.067003	journal	February 2013
Electronic Identification of the Parental Phases and Mesoscopic Phase Separation of $K_{x} {Fe}_{2 - y} {Se}_{2}$ Superconductors Chen, F.; Xu, M.; Ge, Q. Q. Physical Review X, Vol. 1, Issue 2 https://doi.org/10.1103/PhysRevX.1.021020	journal	December 2011
Neutron-Diffraction Measurements of an Antiferromagnetic Semiconducting Phase in the Vicinity of the High-Temperature Superconducting State of $K_{x} {Fe}_{2 - y} {Se}_{2}$ Zhao, Jun; Cao, Huibo; Bourret-Courchesne, E. Physical Review Letters, Vol. 109, Issue 26 https://doi.org/10.1103/PhysRevLett.109.267003	journal	December 2012
Spin waves and spatially anisotropic exchange interactions in the $S = 2$ stripe antiferromagnet ${Rb}_{0.8} {Fe}_{1.5} S_{2}$ Wang, Meng; Valdivia, P.; Yi, Ming Physical Review B, Vol. 92, Issue 4 https://doi.org/10.1103/PhysRevB.92.041109	journal	July 2015
NMR Study in the Iron-Selenide ${Rb}_{0.74} {Fe}_{1.6} {Se}_{2}$ : Determination of the Superconducting Phase as Iron Vacancy-Free ${Rb}_{0.3} {Fe}_{2} {Se}_{2}$ Texier, Y.; Deisenhofer, J.; Tsurkan, V. Physical Review Letters, Vol. 108, Issue 23 https://doi.org/10.1103/PhysRevLett.108.237002	journal	June 2012
Electronic structure of the ${BaFe}_{2} {As}_{2}$ family of iron-pnictide superconductors Yi, M.; Lu, D. H.; Analytis, J. G. Physical Review B, Vol. 80, Issue 2 https://doi.org/10.1103/PhysRevB.80.024515	journal	July 2009
Large Temperature Dependence of the Number of Carriers in Co-Doped ${BaFe}_{2} {As}_{2}$ Brouet, V.; Lin, Ping-Hui; Texier, Y. Physical Review Letters, Vol. 110, Issue 16 https://doi.org/10.1103/PhysRevLett.110.167002	journal	April 2013
Fermi-Surface Shrinking and Interband Coupling in Iron-Based Pnictides Ortenzi, L.; Cappelluti, E.; Benfatto, L. Physical Review Letters, Vol. 103, Issue 4 https://doi.org/10.1103/PhysRevLett.103.046404	journal	July 2009
Antiferromagnetically driven electronic correlations in iron pnictides and cuprates Zhai, Hui; Wang, Fa; Lee, Dung-Hai Physical Review B, Vol. 80, Issue 6 https://doi.org/10.1103/PhysRevB.80.064517	journal	August 2009
Strong Electronic Correlations in Iron Pnictides: Comparison of Optical Spectra for BaFe ₂ As ₂ -Related Compounds Nakajima, Masamichi; Ishida, Shigeyuki; Tanaka, Takahide Journal of the Physical Society of Japan, Vol. 83, Issue 10 https://doi.org/10.7566/JPSJ.83.104703	journal	October 2014
Extraordinary Doping Effects on Quasiparticle Scattering and Bandwidth in Iron-Based Superconductors Ye, Z. R.; Zhang, Y.; Chen, F. Physical Review X, Vol. 4, Issue 3 https://doi.org/10.1103/PhysRevX.4.031041	journal	September 2014
Band Narrowing and Mott Localization in Iron Oxychalcogenides ${La}_{2} O_{2} {Fe}_{2} O (Se, S)_{2}$ Zhu, Jian-Xin; Yu, Rong; Wang, Hangdong Physical Review Letters, Vol. 104, Issue 21 https://doi.org/10.1103/PhysRevLett.104.216405	journal	May 2010
Correlation between superconductivity and antiferromagnetism in Rb $_{0.8}$ Fe $_{2 - y}$ Se $_{2 - x}$ Te $_{x}$ single crystals Gu, Dachun; Sun, Liling; Wu, Qi Physical Review B, Vol. 85, Issue 17 https://doi.org/10.1103/PhysRevB.85.174523	journal	May 2012
Theory for superconductivity in (Tl,K)Fe$_x$Se$_2$ as a doped Mott insulator Zhou, Yi; Xu, Dong-Hui; Zhang, Fu-Chun arXiv https://doi.org/10.48550/arxiv.1101.4462	text	January 2011
Large temperature dependence of the number of carriers in Co-doped BaFe2As2 Brouet, V.; Lin, Ping-Hui; Texier, Y. arXiv https://doi.org/10.48550/arxiv.1301.6891	text	January 2013

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