A note on the possible mechanisms of high-temperature superconductivity

作者：Maksimov E G^*; Dolgov O V

来源：Physics-Uspekhi, 2007, 50(9): 933-937.

DOI：10.1070/PU2007v050n09ABEH006213

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 epsilon(q, 0) cannot he negative - is discussed in detail, as is its consequence, a strong limit on the transition temperature T-c. Proofs are given that epsilon(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.

• 出版日期2007-9