Groundstate properties of the BCS-Bose Einstein crossover in a $d_{x^{2}-y^{2}}$ wave superconductor

Дата и время публикации : 1998-08-05T14:17:46Z

Авторы публикации и институты :
B. C. den Hertog (University of Waterloo)

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: Comments added to text. Scheduled to appear in Phys. Rev. B, Jun 1 1999. RevTex, 5 pages, 4 figures
Первичная категория: cond-mat.supr-con

Все категории : cond-mat.supr-con, cond-mat.str-el

Краткий обзор статьи: We examine the groundstate properties of the crossover between BCS superconductivity and Bose Einstein condensation within a model which exhibits $d_{x^{2} – y^{2}}$ 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 groundstate 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.

Category: Physics