EFFECTIVE LAGRANGIANS FOR BCS SUPERCONDUCTORS AT T=O

被引：88
作者：
AITCHISON, IJR
AO, P
THOULESS, DJ
ZHU, XM
机构：
[1] UNIV WASHINGTON, DEPT PHYS, SEATTLE, WA 98195 USA
[2] UNIV OXFORD, DEPT PHYS, OXFORD OX1 3NP, ENGLAND
来源：
PHYSICAL REVIEW B | 1995年 / 51卷 / 10期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevB.51.6531
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We show that the low-frequency, long-wavelength dynamics of the phase of the pair field for a BCS-type s-wave superconductor at T=0 is equivalent to that of a time-dependent nonlinear Schrödinger Lagrangian (TDNLSL), when terms required by Galilean invariance are included. If the modulus of the pair field is also allowed to vary, the system is equivalent to two coupled TDNLSL's. © 1995 The American Physical Society.
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页码：6531 / 6535
页数：5
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