Vortex molecule in a nanoscopic square superconducting plate

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

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Using the finite element method and solving the Bogoliubov-de Gennes equation, we have investigated magnetic field dependence of the stable vortex structures in a mesoscopic superconducting plate at low temperature (T = 0:1Tc). Because of the compactness of vortex configuration, there is interference between bound states around vortices and such quasi-particle structure affects the vortex configuration. Especially in two-vortices state, vortices form a molecule-like state, where bound states of each vortex form molecular orbital like bonding and anti-bonding states. The vortex configuration is different from that, which is expected from the repulsive interaction between vortices.

Original languageEnglish
Article number124704
Journaljournal of the physical society of japan
Volume79
Issue number12
DOIs
Publication statusPublished - 2010 Dec 1

Keywords

  • Bogoliubov-de Gennes equation
  • Finite element method
  • Nanoscopic superconductors
  • Quasi-particle structure
  • Vortex molecule
  • Vortex physics

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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