Temperature dependence of the critical current density of superconductors in two-band Ginzburg-Landau theory: Application to MgB2

Askerzade İ.

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol.18, no.13, pp.1931-1936, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 18 Issue: 13
  • Publication Date: 2004
  • Doi Number: 10.1142/s0217979204025014
  • Journal Name: INTERNATIONAL JOURNAL OF MODERN PHYSICS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1931-1936
  • Keywords: magnesium diboride, two-band superconductivity, Ginzburg-Landau theory, critical current density, FIELD, HEAT
  • Ankara University Affiliated: No

Abstract

Temperature dependence of the critical current density j(c)(T) for the superconducting magnesium diboride MgB2 is studied in the vicinity of T-c by using a two-band Ginzburg-Landau (G-L) theory. The result is in good agreement with experimental data for a bulk MgB2. Comparision of obtained results with single-band GL theory are presented.