skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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 0.8Fe 2(Se 1-zS z) 2 (z = 0, 0.5, 1), where superconductivity is continuously suppressed into a metallic phase. Going from the nonsuperconducting Rb 0.8Fe 2S 2 to superconducting Rb 0.8Fe 2Se 2, 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:
 [1];  [1];  [2];  [3];  [3];  [4];  [5];  [6];  [6];  [7];  [8]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Physics
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Computational Research Division
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division
  5. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
  7. 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
  8. 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:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1393002
Alternate Identifier(s):
OSTI ID: 1229909
Grant/Contract Number:  
AC02-05CH11231; AC03-76SF008
Resource Type:
Journal Article: 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.
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. doi:10.1103/PhysRevLett.115.256403.
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. doi:10.1103/PhysRevLett.115.256403. https://www.osti.gov/servlets/purl/1393002.
@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}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

Save / Share:

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

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

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