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 › peer-review

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
Pages (from-to)	8-10
Number of pages	3
Journal	Physica C: Superconductivity and its applications
Volume	530
DOIs	https://doi.org/10.1016/j.physc.2016.04.006
Publication status	Published - Nov 15 2016

Keywords

Bogoliubov-de Gennes theory
Paramagnetic pair-breaking
Surface superconductivity

ASJC Scopus subject areas

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

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10.1016/j.physc.2016.04.006

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title = "Pair-breaking effects by parallel magnetic field in electric-field-induced surface superconductivity",

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.",

keywords = "Bogoliubov-de Gennes theory, Paramagnetic pair-breaking, Surface superconductivity",

author = "Masahiro Nabeta and Tanaka, {Kenta K.} and Seiichiro Onari and Masanori Ichioka",

note = "Funding Information: This work was supported by JSPS KAKENHI Grant Number 25400373 . Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

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T1 - Pair-breaking effects by parallel magnetic field in electric-field-induced surface superconductivity

AU - Nabeta, Masahiro

AU - Tanaka, Kenta K.

AU - Onari, Seiichiro

AU - Ichioka, Masanori

PY - 2016/11/15

Y1 - 2016/11/15

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.

KW - Bogoliubov-de Gennes theory

KW - Paramagnetic pair-breaking

KW - Surface superconductivity

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JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

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

Abstract

Keywords

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