Superconducting symmetries of nano-structured anisotropic superconductors

Masaru Kato; Tomio Koyama; Masahiko Machida; Takekazu Ishida

doi:10.1016/j.physc.2007.04.211

Superconducting symmetries of nano-structured anisotropic superconductors

Masaru Kato, Tomio Koyama, Masahiko Machida, Takekazu Ishida

Research output: Contribution to journal › Article › peer-review

Abstract

Using the Bogoliubov-de Gennes equation, nano-structured anisotropic superconductors are investigated. The symmetry of order parameter strongly depends on its shape. For π/4 rotated square superconductors, s + id superconductivity becomes stable. And because of broken time-reversal symmetry of this state, there appear spontaneous currents around the boundary. This result shows shape of the superconductors controls their superconducting symmetry.

Original language	English
Pages (from-to)	1436-1437
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	460-462 II
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2007.04.211
Publication status	Published - 2007 Sept 1
Externally published	Yes

Keywords

Anisotropic superconductivity
Bogoliubov-de Gennes equation
Nano-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.2007.04.211

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title = "Superconducting symmetries of nano-structured anisotropic superconductors",

abstract = "Using the Bogoliubov-de Gennes equation, nano-structured anisotropic superconductors are investigated. The symmetry of order parameter strongly depends on its shape. For π/4 rotated square superconductors, s + id superconductivity becomes stable. And because of broken time-reversal symmetry of this state, there appear spontaneous currents around the boundary. This result shows shape of the superconductors controls their superconducting symmetry.",

keywords = "Anisotropic superconductivity, Bogoliubov-de Gennes equation, Nano-superconductivity",

author = "Masaru Kato and Tomio Koyama and Masahiko Machida and Takekazu Ishida",

note = "Funding Information: This work is partially supported by Grant-in-Aid for the Scientific Research (C) from the Japan Society for the Promotion of Science. Part of numerical computation has been done on the Computer Facilities of Institute for Materials Research, Tohoku University.",

year = "2007",

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doi = "10.1016/j.physc.2007.04.211",

language = "English",

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journal = "Physica C: Superconductivity and its Applications",

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T1 - Superconducting symmetries of nano-structured anisotropic superconductors

AU - Kato, Masaru

AU - Koyama, Tomio

AU - Machida, Masahiko

AU - Ishida, Takekazu

N1 - Funding Information: This work is partially supported by Grant-in-Aid for the Scientific Research (C) from the Japan Society for the Promotion of Science. Part of numerical computation has been done on the Computer Facilities of Institute for Materials Research, Tohoku University.

PY - 2007/9/1

Y1 - 2007/9/1

N2 - Using the Bogoliubov-de Gennes equation, nano-structured anisotropic superconductors are investigated. The symmetry of order parameter strongly depends on its shape. For π/4 rotated square superconductors, s + id superconductivity becomes stable. And because of broken time-reversal symmetry of this state, there appear spontaneous currents around the boundary. This result shows shape of the superconductors controls their superconducting symmetry.

AB - Using the Bogoliubov-de Gennes equation, nano-structured anisotropic superconductors are investigated. The symmetry of order parameter strongly depends on its shape. For π/4 rotated square superconductors, s + id superconductivity becomes stable. And because of broken time-reversal symmetry of this state, there appear spontaneous currents around the boundary. This result shows shape of the superconductors controls their superconducting symmetry.

KW - Anisotropic superconductivity

KW - Bogoliubov-de Gennes equation

KW - Nano-superconductivity

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M3 - Article

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SN - 0921-4534

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SP - 1436

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JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - SPEC. ISS.

ER -

Superconducting symmetries of nano-structured anisotropic superconductors

Abstract

Keywords

ASJC Scopus subject areas

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