CONSIDERATION OF THE MECHANISM OF SUPERCONDUCTIVITY IN FULLERENES - BEYOND MIGDAL THEOREM AND THE DYNAMIC COULOMB EFFECT

被引：35

作者：

TAKADA, Y

机构：

[1] Institute for Solid State Physics, University of Tokyo, Minato-ku, Tokyo, 106

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1993年 / 54卷 / 12期

关键词：

SUPERCONDUCTIVITY; PHONON MECHANISM; PLASMON; VERTEX CORRECTIONS; MIGDAL THEOREM; GAUGE-INVARIANT SELF-CONSISTENT (GISC);

D O I：

10.1016/0022-3697(93)90290-8

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A scheme is presented to include vertex corrections up to infinite order in the calculation of the superconducting transition temperature T(c). The scheme is applied to the alkali-metal-doped fullerenes. By considering the contribution from both the carrier plasmons and the intramolecular high-frequency phonon modes with lambda around 0.6, we can reproduce the experimentally-observed T(c) vs a relation quantitatively, where a is the fcc lattice constant. For the isotope exponent alpha, the present calculation gives values around 0.2.

引用

页码：1779 / 1788

页数：10

共 55 条

[1] SUPERCONDUCTIVITY - GAUGE FIELD-THEORY FORMULATION [J].