Email this article Role of a fermion condensate in the structure of high-temperature pairing in cuprates
- Authors: Khodel V.A.1,2, Clark J.W.2,3, Zverev M.V.1,4
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Affiliations:
- National Research Center Kurchatov Institute
- McDonnell Center for the Space Sciences & Department of Physics
- Centro de Ciências Matemáticas University of Madeira
- Moscow Institute of Physics and Technology (State University)
- Issue: Vol 105, No 4 (2017)
- Pages: 267-272
- Section: Condensed Matter
- URL: https://ogarev-online.ru/0021-3640/article/view/160114
- DOI: https://doi.org/10.1134/S0021364017040099
- ID: 160114
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Abstract
The anomalous properties of a pairing gap in cuprate superconductors have been explained under the assumption that their electron systems in the normal phase exhibit a fermion condensate, i.e., a set of dispersionless states close to the nominal Fermi surface. It has been shown that exactly the fermion condensate is responsible for D-state pairing in cuprates. More specifically, the effective Coulomb repulsion in the Cooper channel, which prevents the existence of superconductivity in normal metals in the S channel, makes it high-temperature in the D channel.
About the authors
V. A. Khodel
National Research Center Kurchatov Institute; McDonnell Center for the Space Sciences & Department of Physics
Author for correspondence.
Email: vak@wuphys.wustl.edu
Russian Federation, Moscow, 123182; St. Louis, MO, 63130
J. W. Clark
McDonnell Center for the Space Sciences & Department of Physics; Centro de Ciências Matemáticas University of Madeira
Email: vak@wuphys.wustl.edu
United States, St. Louis, MO, 63130; Funchal, Madeira
M. V. Zverev
National Research Center Kurchatov Institute; Moscow Institute of Physics and Technology (State University)
Email: vak@wuphys.wustl.edu
Russian Federation, Moscow, 123182; Dolgoprudnyi, Moscow region, 147000
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