Quasi-particle spectrum of the nano-scaled anisotropic superconducting plate

Masaru Kato; Hisataka Suematsu; Masahiko Machida; Tomio Koyama; Takekazu Ishida

doi:10.1016/j.physc.2005.12.085

Quasi-particle spectrum of the nano-scaled anisotropic superconducting plate

Masaru Kato, Hisataka Suematsu, Masahiko Machida, Tomio Koyama, Takekazu Ishida

Institute for Materials Research (IMR)

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

1 Citation (Scopus)

Abstract

Using the Bogoliubov-de Gennes equation for a tight-binding model of electrons, we studied the superconducting state of nano-structured anisotropic superconductors. Assuming the attractive interaction between nearest-neighbor sites, we obtained mainly d(cos k_x - cos k_y)-wave pairing state. But the superconducting states are inhomogeneous because of the surface. Especially, square plates with π/4 rotation show suppression of the d(cos k_x - cos k_y)-wave order parameter and there appear the quasi-particle states along the surface in the superconducting energy gap.

Original language	English
Pages (from-to)	132-135
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	437-438
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2005.12.085
Publication status	Published - 2006 May 15

Keywords

Bogoliubov-de Gennes equation
Nano-scaled superconductors
d-wave superconductors

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.2005.12.085

Cite this

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title = "Quasi-particle spectrum of the nano-scaled anisotropic superconducting plate",

abstract = "Using the Bogoliubov-de Gennes equation for a tight-binding model of electrons, we studied the superconducting state of nano-structured anisotropic superconductors. Assuming the attractive interaction between nearest-neighbor sites, we obtained mainly d(cos kx - cos ky)-wave pairing state. But the superconducting states are inhomogeneous because of the surface. Especially, square plates with π/4 rotation show suppression of the d(cos kx - cos ky)-wave order parameter and there appear the quasi-particle states along the surface in the superconducting energy gap.",

keywords = "Bogoliubov-de Gennes equation, Nano-scaled superconductors, d-wave superconductors",

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

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T1 - Quasi-particle spectrum of the nano-scaled anisotropic superconducting plate

AU - Kato, Masaru

AU - Suematsu, Hisataka

AU - Machida, Masahiko

AU - Koyama, Tomio

AU - Ishida, Takekazu

N1 - Funding Information: Part of this work was performed under the inter-university cooperative Research program of the Institute for Materials Research, Tohoku University. And part of the numerical computation has been done on the computer facility of the Japan Atomic Energy Research Institute.

PY - 2006/5/15

Y1 - 2006/5/15

N2 - Using the Bogoliubov-de Gennes equation for a tight-binding model of electrons, we studied the superconducting state of nano-structured anisotropic superconductors. Assuming the attractive interaction between nearest-neighbor sites, we obtained mainly d(cos kx - cos ky)-wave pairing state. But the superconducting states are inhomogeneous because of the surface. Especially, square plates with π/4 rotation show suppression of the d(cos kx - cos ky)-wave order parameter and there appear the quasi-particle states along the surface in the superconducting energy gap.

AB - Using the Bogoliubov-de Gennes equation for a tight-binding model of electrons, we studied the superconducting state of nano-structured anisotropic superconductors. Assuming the attractive interaction between nearest-neighbor sites, we obtained mainly d(cos kx - cos ky)-wave pairing state. But the superconducting states are inhomogeneous because of the surface. Especially, square plates with π/4 rotation show suppression of the d(cos kx - cos ky)-wave order parameter and there appear the quasi-particle states along the surface in the superconducting energy gap.

KW - Bogoliubov-de Gennes equation

KW - Nano-scaled superconductors

KW - d-wave superconductors

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JO - Physica C: Superconductivity and its Applications

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SN - 0921-4534

IS - SPEC. ISS.

ER -

Quasi-particle spectrum of the nano-scaled anisotropic superconducting plate

Abstract

Keywords

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