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A note on the possible mechanisms of high-temperature superconductivity

 a,  a, b
a Lebedev Physical Institute, Russian Academy of Sciences, Leninsky prosp. 53, Moscow, 119991, Russian Federation
b Max-Planck Institut für Festkörperforschung, Stuttgart, Germany

Possible mechanisms of high-temperature superconductivity are briefly discussed. In particular, a recent paper by P W Anderson on this problem is criticized as containing a number of incorrect and unfounded statements. One of these — that the static dielectric function ε(q, 0) cannot be negative — is discussed in detail, as is its consequence, a strong limit on the transition temperature Tc. Proofs are given that ε(q, 0) not only can but indeed must be negative in many stable systems, including most of the conventional metals. Various types of electron-electron interaction in superconducting cuprates are discussed. The role of the electron-phonon interaction in cuprates is highlighted.

Fulltext pdf (124 KB)
Fulltext is also available at DOI: 10.1070/PU2007v050n09ABEH006213
PACS: 71.10.Ay, 71.15.Mb, 74.20.−z, 74.72.−h (all)
DOI: 10.1070/PU2007v050n09ABEH006213
URL: https://ufn.ru/en/articles/2007/9/c/
000252639900003
2-s2.0-38349019838
2007PhyU...50..933M
Citation: Maksimov E G, Dolgov O V "A note on the possible mechanisms of high-temperature superconductivity" Phys. Usp. 50 933–937 (2007)
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Оригинал: Максимов Е Г, Долгов О В «О возможных механизмах высокотемпературной сверхпроводимости» УФН 177 983–988 (2007); DOI: 10.3367/UFNr.0177.200709c.0983

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