Possible superconductivity mechanism in high-temperature superconductors

被引：7

作者：

Amelin, II ^{[1
]}

机构：

[1] Mordovian NP Ogarev State Univ, Saransk 430000, Russia

来源：

JETP LETTERS | 2003年 / 77卷 / 03期

关键词：

D O I：

10.1134/1.1567774

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The formation temperature (T* similar to 135 K) is determined in the Shubin-Vonsovski approximation for local electron pairs in the CuO2 planes of YBa2Cu3O7 crystal. This estimate is used to obtain the Coulomb pseudopotential mu* approximate to -0.15. In the presence of strong electron-phonon coupling (lambda similar to 0.5) and electron correlation in the electron pairing, the estimate of critical temperature T-c approximate to 99 K agrees, by the order of magnitude, with its experimental value. The calculated ratio 2Delta/kT(c) approximate to 4.13 confirms the presence of strong electron pairing. (C) 2003 MAIK "Nauka/Interperiodica".

引用

页码：132 / 134

页数：3

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