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Uspekhi Fizicheskikh Nauk, 1999, Volume 169, Number 3, Pages 225–254
DOI: https://doi.org/10.3367/UFNr.0169.199903a.0225
(Mi ufn1575)
 

This article is cited in 78 scientific papers (total in 78 papers)

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Spin-fluctuation mechanism of high-Tc superconductivity and order-parameter symmetry

Yu. A. Izyumov

Institute of Metal Physics, Ural Division of the Russian Academy of Sciences
References:
Abstract: The notion that electrons in high-Tc cuprates pair via antiferromagnetic spin fluctuations is discussed and the symmetry of the superconducting order parameter is analyzed. Three approaches to the problem, one phenomenological (with an experimental dynamic magnetic susceptibility) and two microscopic (involving, respectively, the Hubbard model and the tJ-model) are considered and it is shown that in each case strong-coupling theory leads to a d-wave order parameter with zeros at the Fermi surface. The review then proceeds to consider experimental techniques in which the d-symmetry of the order parameter may manifest itself. These include low-temperature thermodynamic measurements, measurements of the penetration depth and the upper critical field, Josephson junction experiments to obtain the phase of the superconducting order parameter, and various spectroscopic methods. The experimental data suggest that the order parameter in cuprates is [IMG align=ABSMIDDLE alt=$d_{x^2-y^2}$]izy01[/IMG]- wave. Ginzburg—Landau theory for a superconductor with a d-wave order parameter is outlined and both an isolated vortex and a vortex lattice are investigated. Finally, some theoretical aspects of the effects of nonmagnetic impurities on a d-wave superconductor are considered.
Received: March 13, 1998
English version:
Physics–Uspekhi, 1999, Volume 42, Issue 3, Pages 215–243
DOI: https://doi.org/10.1070/PU1999v042n03ABEH000473
Bibliographic databases:
Document Type: Article
PACS: 71.27.+a, 74.90.+n, 74.25.Jb
Language: Russian


Citation: Yu. A. Izyumov, “Spin-fluctuation mechanism of high-Tc superconductivity and order-parameter symmetry”, UFN, 169:3 (1999), 225–254; Phys. Usp., 42:3 (1999), 215–243
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  • This publication is cited in the following 78 articles:
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