Effect of site dilution in the two-dimensional attractive Hubbard model
Strongly Correlated Electrons
2018-10-31 v1 Superconductivity
Abstract
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.
Keywords
Cite
@article{arxiv.1511.00380,
title = {Effect of site dilution in the two-dimensional attractive Hubbard model},
author = {Saurabh Pradhan and G. Venketeswara Pai},
journal= {arXiv preprint arXiv:1511.00380},
year = {2018}
}