Multiple-gap structure in electric-field-induced surface superconductivity
Superconductivity
2013-03-04 v1
Abstract
Local superconducting gap structure is studied as a function of nanoscale depth in electric-field-induced surface superconductivity such as in SrTiO3. We examine solutions of Bogoliubov-de Gennes equation in two limiting confinement potential cases of electric field with and without screening effects. As unique properties different from bulk superconductivity, there appear in-gap states even for isotropic s-wave pairing, due to multiple gap structure of sub-band dependent surface superconductivity. These determine the depth-dependence of local superconductivity.
Keywords
Cite
@article{arxiv.1301.0639,
title = {Multiple-gap structure in electric-field-induced surface superconductivity},
author = {Yousuke Mizohata and Masanori Ichioka and Kazushige Machida},
journal= {arXiv preprint arXiv:1301.0639},
year = {2013}
}
Comments
5 pages, 4 figures