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HYBRIDIZATION EFFECT ON SUPERCONDUCTIVITY IN TRANSITION-METALS

被引：7
|
作者：
JAPIASSU, GM
CONTINENTINO, MA
TROPER, A
机构：
[1] UNIV FED FLUMINENSE,INST FIS,BR-24210 NITEROI,BRAZIL
[2] CTR BRASILEIRO PESQUISAS FIS,BR-22290 RIO DE JANEIRO,BRAZIL
来源：
PHYSICA B | 1991年 / 171卷 / 1-4期
关键词：
D O I：
10.1016/0921-4526(91)90497-3
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The effect of hybridization on superconductivity in transition metals is studied within a two-band model in the framework of an extended BCS theory. It is described by an one-body Hamiltonian differently from the usual two-particle scheme for the interband interaction. We use the equation of motion method to obtain a self-consistent equation for the critical temperature. The one-body interaction terms causes a renormalization of the density of states and the narrowing of the d-band generates an enhancement of the superconducting transition temperature. Numerical results are presented and compared with previous works.
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页码：98 / 101
页数：4
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