Pair-breaking effects by parallel magnetic field in electric-field-induced surface superconductivity

Masahiro Nabeta; Kenta K. Tanaka; Seiichiro Onari; Masanori Ichioka

doi:10.1016/j.physc.2016.04.006

Pair-breaking effects by parallel magnetic field in electric-field-induced surface superconductivity

Masahiro Nabeta, Kenta K. Tanaka, Seiichiro Onari, Masanori Ichioka

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

We study paramagnetic pair-breaking in electric-field-induced surface superconductivity, when magnetic field is applied parallel to the surface. The calculation is performed by Bogoliubov-de Gennes theory with s-wave pairing, including the screening effect of electric fields by the induced carriers near the surface. Due to the Zeeman shift by applied fields, electronic states at higher-level sub-bands become normal-state-like. Therefore, the magnetic field dependence of Fermi-energy density of states reflects the multi-gap structure in the surface superconductivity.

Original language	English
Journal	Physica C: Superconductivity and its Applications
DOIs	https://doi.org/10.1016/j.physc.2016.04.006
Publication status	Accepted/In press - Jan 30 2016

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Keywords

Bogoliubov-de Gennes theory
Paramagnetic pair-breaking
Surface superconductivity

ASJC Scopus subject areas

Condensed Matter Physics
Electrical and Electronic Engineering
Energy Engineering and Power Technology
Electronic, Optical and Magnetic Materials

Cite this

Nabeta, M., Tanaka, K. K., Onari, S., & Ichioka, M. (Accepted/In press). Pair-breaking effects by parallel magnetic field in electric-field-induced surface superconductivity. Physica C: Superconductivity and its Applications. https://doi.org/10.1016/j.physc.2016.04.006

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AB - We study paramagnetic pair-breaking in electric-field-induced surface superconductivity, when magnetic field is applied parallel to the surface. The calculation is performed by Bogoliubov-de Gennes theory with s-wave pairing, including the screening effect of electric fields by the induced carriers near the surface. Due to the Zeeman shift by applied fields, electronic states at higher-level sub-bands become normal-state-like. Therefore, the magnetic field dependence of Fermi-energy density of states reflects the multi-gap structure in the surface superconductivity.

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Access to Document

10.1016/j.physc.2016.04.006