Unusual thermodynamical and transport signatures of the BCS to Bose-Einstein crossover scenario below Tc

被引：44

作者：

Chen, QJ ^{[1
]}

Kosztin, I ^{[1
]}

Levin, K ^{[1
]}

机构：

[1] Univ Chicago, James Franck Inst, Chicago, IL 60637 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 13期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.85.2801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper we present predictions for thermodynamic and transport properties of a BCS to Bose-Einstein crossover theory, below T-c, which satisfies the reasonable constraints that it yields (i) the Leggett ground state and (ii) BCS theory at weak coupling and all temperatures T. The nature of the strong coupling limit is inferred, along with the behavior of the Knight shift, superfluid density, and specific heat. Comparisons with existing data on short coherence length superconductors, such as organic and high T-c systems, are presented, which provide some support for the present picture.

引用

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页码：2801 / 2804

页数：4

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