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

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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Kato, M., Suematsu, H., Machida, M., Koyama, T., & Ishida, T. (2006). Quasi-particle spectrum of the nano-scaled anisotropic superconducting plate. Physica C: Superconductivity and its applications, 437-438(SPEC. ISS.), 132-135. https://doi.org/10.1016/j.physc.2005.12.085

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AU - Ishida, Takekazu

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KW - d-wave superconductors

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