Domains in multiband superconductors

Research output: Contribution to journalArticlepeer-review

Authors

  • Y. Tanaka
  • T. Yanagisawa
  • P.m. Shirage
  • A. Iyo
  • K. Tokiwa
  • T. Nishio
  • A. Sundaresan
  • N. Terada

Colleges, School and Institutes

Abstract

Multiband superconductors can have several types of domains that are inhibited in conventional single-band superconductors. These domains are phase domains and chiral domains and their domain wall are an interband phase difference soliton. In a superconductor with an odd number of electronic bands (five or more) and with positive interband Josephson interactions, we find other types of domains with different interband phase differences. We call these domains configuration domains because pseudo-order parameters for each band are dispersed in the complex plain and several configurations, which have several local minima. Fractional vortices serve as hubs for phase difference solitons (configuration domain walls). The divergence of the number of configurations with local minima would pose a serious problem for the stability of superconductivity.

Details

Original languageEnglish
Pages (from-to)747-750
Number of pages4
JournalPhysica C Superconductivity
Volume471
Issue number21-22
Early online date13 May 2011
Publication statusPublished - 1 Nov 2011
Event International Symposium on Superconductivity (ISS 2010), 23rd - Tsukuba, Japan
Duration: 1 Nov 20103 Nov 2010