Doping dependence of T-c and its related isotope effect in high-temperature superconductors

被引：14

作者：

BussmannHolder, A ^{[1
]}

Bishop, AR ^{[1
]}

Genzel, L ^{[1
]}

Simon, A ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.55.11751

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A structure specific four-band model Hamiltonian is used to investigate the various doping dependences of the superconducting temperature T-c and the related isotope effect for YBa2Cu3O7 (YBCO). The model considers explicitly multiphonon-mediated attractive electron (hole) pairing Which acts intra- and interband and yields a complicated three-dimensional gap structure. The doping dependence of T-c is calculated by varying the band specific density of states, and from this the corresponding isotope effect is evaluated. Consistent agreement with experimental results is obtained and predictions with respect to site selective doping (including the isotope effect) are given.

引用

页码：11751 / 11755

页数：5

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