Microscopic Study of Quantum Vortex-Glass Transition Field in Two-Dimensional Superconductors

Hideharu Ishida, Hiroto Adachi, Ryusuke Ikeda

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The position Bvg of a field-tuned superconductor-insulator quantum transition occuring in disordered thin films is examined within the mean field approximation and starting from a hamiltonian of BCS type (favoring the s-wave pairing) with a random potential, and effects of an electron-electron repulsion on the transition field Bvg are also considered. Our calculation shows that the (microscopic) disorder-induced reduction of Bvg suggested experimentally cannot be explained without taking account of the familiar interplay between the randomness and the electron-electron repulsion enhancing the quantum superconducting fluctuation in such systems.

Original languageEnglish
Pages (from-to)245-253
Number of pages9
Journaljournal of the physical society of japan
Volume71
Issue number1
DOIs
Publication statusPublished - Jan 1 2002
Externally publishedYes

Keywords

  • Superconducting fluctuation
  • Superconductor-insulator transition
  • Vortex-glass transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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