Isotope shift exponent in two-band high-Tc superconductors with linear-energy-dependent electronic density of states

被引：12

作者：

Okoye, CMI ^{[1
]}

机构：

[1] Univ Nigeria, Dept Phys & Astron, Nsukka, Nigeria

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1999年 / 313卷 / 3-4期

关键词：

isotope effect; high-T-c superconductivity; energy-dependent electronic density of states; negative-U centre interaction;

D O I：

10.1016/S0921-4534(98)00685-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The isotope shift exponent is derived from the two-band BCS gap equation with a Linear-energy-dependent electronic density of states and assuming that both the electron-phonon and free-carrier negative-U centre interacting mechanisms are simultaneously present. The result shows that some of the anomalous features of the isotope shift exponent observed in high-T-c superconductors could be interpreted within this present model. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：197 / 204

页数：8

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