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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2018, Volume 108, Issue 4, Pages 267–277
DOI: https://doi.org/10.1134/S0370274X18160087
(Mi jetpl5681)
 

This article is cited in 2 scientific papers (total in 2 papers)

SCIENTIFIC SUMMARIES

Topological scenario for high-temperature superconductivity in cuprates

V. A. Khodelabc, J. W. Clarkdab, M. V. Zverevec

a Department of Physics, Washington University, St. Louis, MO 63130, USA
b McDonnell Center for the Space Sciences & Department of Physics, Washington University, St. Louis, USA
c National Research Center Kurchatov Institute, Moscow, Russia
d Centro de Ciências Matemáticas University of Madeira, Funchal, Madeira, Portugal
e Moscow Institute of Physics and Technology (State University), Dolgoprudnyi, Russia
Full-text PDF (448 kB) Citations (2)
References:
Abstract: The structure of the joint phase diagram of high-temperature superconducting cuprates has been studied within the theory of fermion condensation. Prerequisites of the topological rearrangement of the Landau state with the formation of a flat band adjacent to the nominal Fermi surface have been established. The related non-Fermi-liquid behavior of cuprates in the normal phase has been studied with focus on the non-Fermi-liquid behavior of the resistivity $\rho(T)$, including the observed crossover from the linear temperature behavior $\rho(T,x)=A_1(x)T$ at doping levels $x$ below the critical value $x_c^h$ corresponding to the boundary of the superconducting region to the quadratic temperature behavior at $x>x_c^h$, which is incompatible with predictions of the conventional quantum-critical-point scenario. It has been demonstrated that the slope of the coefficient $A_1(x)$ is universal and is the same on both boundaries of the joint phase diagram of cuprates in agreement with available experimental data. It has also been shown that the fermion condensate is responsible for pairing in the $D$-wave state in cuprates. The effective Coulomb repulsion in the Cooper channel, which prevents the existence of superconductivity in normal metals in the $S$ channel, leads to high-temperature superconductivity in the $D$ channel.
Funding agency Grant number
Russian Foundation for Basic Research 15-02-06261_a
Received: 02.07.2018
English version:
Journal of Experimental and Theoretical Physics Letters, 2018, Volume 108, Issue 4, Pages 260–269
DOI: https://doi.org/10.1134/S0021364018160051
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: V. A. Khodel, J. W. Clark, M. V. Zverev, “Topological scenario for high-temperature superconductivity in cuprates”, Pis'ma v Zh. Èksper. Teoret. Fiz., 108:4 (2018), 267–277; JETP Letters, 108:4 (2018), 260–269
Citation in format AMSBIB
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\yr 2018
\vol 108
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  • This publication is cited in the following 2 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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    Письма в Журнал экспериментальной и теоретической физики Pis'ma v Zhurnal Иksperimental'noi i Teoreticheskoi Fiziki
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