MECHANISM OF SUPERCONDUCTIVITY IN K3C60

被引：13

作者：

CHEN, GH

GODDARD, WA

机构：

[1] Mat. and Molecular Simulation Center, California Inst. of Technol., 139-74, Pasadena

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 1993年 / 90卷 / 04期

关键词：

ALKALI; BUCKMINSTERFULLERENE; ELECTRON PHONON COUPLING;

D O I：

10.1073/pnas.90.4.1350

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Using electronic states and phonon states from the first-principles calculations and including both conventional electron-phonon charge coupling and Jahn-Teller coupling, we predict T(c) and other superconducting properties. The only adjustable parameter in the theory is the screening length, R(sc). Using R(sc) = 0.8-1.0 angstrom, we find excellent agreement with experiment for T(c) (16-18 K), pressure dependence of T(c) (DELTAT(c) = -6 to -10 K for 1 GPa), and C-12 to C-13 isotope shift (alpha(C) = 0.2); experimental values: 19 K, -7 K, and 0.3, respectively.

引用

页码：1350 / 1353

页数：4

共 30 条

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