Effect of site dilution in the two-dimensional attractive Hubbard model

被引：4

作者：

Pradhan, Saurabh ^{[1
]}

Pai, G. Venketeswara ^{[1
]}

机构：

[1] Harish Chandra Res Inst, Chhatnag Rd, Allahabad 211019, Uttar Pradesh, India

来源：

PHYSICAL REVIEW B | 2018年 / 98卷 / 16期

关键词：

SUPERCONDUCTOR-INSULATOR TRANSITION; BCS-BEC CROSSOVER; PHASE-TRANSITIONS; SYSTEMS; FIELD; FILMS; LIMIT;

D O I：

10.1103/PhysRevB.98.165142

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the percolative superconducting transition as the density of randomly placed attractive centers grows in a host metal. Employing the Hubbard-Stratanovich transformation for the interaction and allowing for spatial, thermal fluctuations of the pairing field, we obtain real-space features of the transition from weak to strong coupling. Spectral and transport properties are studied in detail. BCS-BEC crossover is discussed in the context of site dilution of attractive centers.

引用

页数：8

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