Ground-state properties of the BCS-Bose Einstein crossover in a dx2-y2-wave superconductor

被引：32

作者：

den Hertog, BC ^{[1
]}

机构：

[1] Univ Waterloo, Dept Phys, Waterloo, ON N2L 3G1, Canada

[2] Australian Natl Univ, Dept Theoret Phys, Inst Adv Studies, Canberra, ACT 0200, Australia

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.60.559

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We examine the ground-state properties of the crossover between BCS superconductivity and Bose Einstein condensation within a model that exhibits d(x2)-(y2) pairing symmetry. We compare results for zero temperature with known features of s-wave systems and show that bosonic degrees of freedom are likely to emerge only in the dilute limit. We relate the change in properties of the ground state as a function of density to the effect of the exclusion principle and show that the one-particle distribution function undergoes a significant change when bosonic behavior appears. [S0163-1829(99)00822-X].

引用

页码：559 / 563

页数：5

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