Friedel oscillation in charge profile around superconducting vortex core

Masahiko Machida, Tomio Koyama

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

We numerically perform microscopic calculations for charge distributions around a superconducting vortex core on the basis of the BdG formalism including the Poisson equation for the scalar potential. The numerical results reveal that the charge distribution shows the Friedel oscillation around a vortex core and the oscillation survives over the coherence length in small kFξ cases, i.e. the quantum limit. To clarify the origin of the oscillation we study the charge screening properties by calculating the charge density correlation function around a vortex core. The correlation function strongly depends on the position from the vortex center and remarkably oscillates around the vortex core. This result indicates that the Thomas-Fermi type screening is broken in the vortex core.

Original languageEnglish
Pages (from-to)659-660
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume388-389
DOIs
Publication statusPublished - 2003 May 1
Eventproceedings of the 23rd international conference on low temper - Hiroshima, Japan
Duration: 2002 Aug 202002 Aug 27

Keywords

  • Charge screening
  • Friedel oscillation
  • Vortex charge profile

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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