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

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

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


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.

Original languageEnglish
Pages (from-to)132-135
Number of pages4
JournalPhysica C: Superconductivity and its applications
Issue numberSPEC. ISS.
Publication statusPublished - 2006 May 15
Externally publishedYes


  • 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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