s± pairing near a Lifshitz transition
Abstract
Observations of robust superconductivity in some of the iron based superconductors in the vicinity of a Lifshitz point where a spin density wave instability is suppressed as the hole band drops below the Fermi energy raise questions for spin-fluctuation theories. In this paper we discuss spin-fluctuation pairing for a bilayer Hubbard model, which goes through such a Lifshitz transition. Our results show s± pairing with a transition temperature that peaks beyond the Lifshitz point and a gap function that has essentially the same magnitude but opposite sign on the incipient hole band as it does on the electron band that has a Fermi surface.
- Authors:
-
- Univ. of Tennessee, Knoxville, TN (United States)
- Univ. of California, Santa Barbara, CA (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Joint Institute for Computational Sciences (JICS)
- Sponsoring Org.:
- USDOE Office of Science (SC); USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1311242
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Volume: 6; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Mishra, Vivek, Scalapino, Douglas J., and Maier, Thomas A. s± pairing near a Lifshitz transition. United States: N. p., 2016.
Web. doi:10.1038/srep32078.
Mishra, Vivek, Scalapino, Douglas J., & Maier, Thomas A. s± pairing near a Lifshitz transition. United States. https://doi.org/10.1038/srep32078
Mishra, Vivek, Scalapino, Douglas J., and Maier, Thomas A. Fri .
"s± pairing near a Lifshitz transition". United States. https://doi.org/10.1038/srep32078. https://www.osti.gov/servlets/purl/1311242.
@article{osti_1311242,
title = {s± pairing near a Lifshitz transition},
author = {Mishra, Vivek and Scalapino, Douglas J. and Maier, Thomas A.},
abstractNote = {Observations of robust superconductivity in some of the iron based superconductors in the vicinity of a Lifshitz point where a spin density wave instability is suppressed as the hole band drops below the Fermi energy raise questions for spin-fluctuation theories. In this paper we discuss spin-fluctuation pairing for a bilayer Hubbard model, which goes through such a Lifshitz transition. Our results show s± pairing with a transition temperature that peaks beyond the Lifshitz point and a gap function that has essentially the same magnitude but opposite sign on the incipient hole band as it does on the electron band that has a Fermi surface.},
doi = {10.1038/srep32078},
journal = {Scientific Reports},
number = ,
volume = 6,
place = {United States},
year = {Fri Aug 26 00:00:00 EDT 2016},
month = {Fri Aug 26 00:00:00 EDT 2016}
}
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Works referencing / citing this record:
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