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Title: 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:
 [1];  [2];  [3];  [4];  [5];  [6]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computer Science and Mathematics Division. Center for Nanophase Materials Sciences
  2. IBM Research, Zurich (Switzerland)
  3. Univ. of Tennessee, Knoxville, TN (United States). Joint Inst. of Computational Sciences
  4. Univ. of Virginia, Charlottesville, VA (United States). Dept. of Physics
  5. Univ. of Illinois, Chicago, IL (United States). Dept. of Physics
  6. 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:
Journal Article: 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. 2016. "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},
url = {https://www.osti.gov/biblio/1302900}, journal = {Nature Communications},
issn = {2041-1723},
number = ,
volume = 7,
place = {United States},
year = {Fri Jun 17 00:00:00 EDT 2016},
month = {Fri Jun 17 00:00:00 EDT 2016}
}

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Cited by: 17 works
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Works referenced in this record:

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journal, March 2014


The pseudogap: friend or foe of high T c ?
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Strong Coupling Superconductivity, Pseudogap, and Mott Transition
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Pseudogap, van Hove singularity, maximum in entropy, and specific heat for hole-doped Mott insulators
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