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

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

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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.",

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AU - Nabeta, Masahiro

AU - Tanaka, Kenta K.

AU - Onari, Seiichiro

AU - Ichioka, Masanori

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N2 - 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.

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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