Pairing in a dry Fermi sea
Abstract
In the traditional Bardeen–Cooper–Schrieffer theory of superconductivity, the amplitude for the propagation of a pair of electrons with momentum k and -k has a log singularity as the temperature decreases. This so-called Cooper instability arises from the presence of an electron Fermi sea. It means that an attractive interaction, no matter how weak, will eventually lead to a pairing instability. However, in the pseudogap regime of the cuprate superconductors, where parts of the Fermi surface are destroyed, this log singularity is suppressed, raising the question of how pairing occurs in the absence of a Fermi sea. In this paper, we report Hubbard model numerical results and the analysis of angular-resolved photoemission experiments on a cuprate superconductor. Finally, in contrast to the traditional theory, we find that in the pseudogap regime the pairing instability arises from an increase in the strength of the spin–fluctuation pairing interaction as the temperature decreases rather than the Cooper log instability.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computer Science and Mathematics Division. Center for Nanophase Materials Sciences
- IBM Research, Zurich (Switzerland)
- Univ. of Tennessee, Knoxville, TN (United States). Joint Inst. of Computational Sciences
- Univ. of Virginia, Charlottesville, VA (United States). Dept. of Physics
- Univ. of Illinois, Chicago, IL (United States). Dept. of Physics
- Univ. of California, Santa Barbara, CA (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS). Oak Ridge Leadership Computing Facility (OLCF)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1302900
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 7; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; materials science; physical sciences; condensed matter
Citation Formats
Maier, Thomas A., Staar, Peter, Mishra, V., Chatterjee, Utpal, Campuzano, J. C., and Scalapino, Douglas J. Pairing in a dry Fermi sea. United States: N. p., 2016.
Web. doi:10.1038/ncomms11875.
Maier, Thomas A., Staar, Peter, Mishra, V., Chatterjee, Utpal, Campuzano, J. C., & Scalapino, Douglas J. Pairing in a dry Fermi sea. United States. https://doi.org/10.1038/ncomms11875
Maier, Thomas A., Staar, Peter, Mishra, V., Chatterjee, Utpal, Campuzano, J. C., and Scalapino, Douglas J. Fri .
"Pairing in a dry Fermi sea". United States. https://doi.org/10.1038/ncomms11875. https://www.osti.gov/servlets/purl/1302900.
@article{osti_1302900,
title = {Pairing in a dry Fermi sea},
author = {Maier, Thomas A. and Staar, Peter and Mishra, V. and Chatterjee, Utpal and Campuzano, J. C. and Scalapino, Douglas J.},
abstractNote = {In the traditional Bardeen–Cooper–Schrieffer theory of superconductivity, the amplitude for the propagation of a pair of electrons with momentum k and -k has a log singularity as the temperature decreases. This so-called Cooper instability arises from the presence of an electron Fermi sea. It means that an attractive interaction, no matter how weak, will eventually lead to a pairing instability. However, in the pseudogap regime of the cuprate superconductors, where parts of the Fermi surface are destroyed, this log singularity is suppressed, raising the question of how pairing occurs in the absence of a Fermi sea. In this paper, we report Hubbard model numerical results and the analysis of angular-resolved photoemission experiments on a cuprate superconductor. Finally, in contrast to the traditional theory, we find that in the pseudogap regime the pairing instability arises from an increase in the strength of the spin–fluctuation pairing interaction as the temperature decreases rather than the Cooper log instability.},
doi = {10.1038/ncomms11875},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {Fri Jun 17 00:00:00 EDT 2016},
month = {Fri Jun 17 00:00:00 EDT 2016}
}
Web of Science
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