Anisotropy of Critical Current Density in LiFeAs Using Two-Band Ginzburg-Landau Theory

Askerzade İ.

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, cilt.30, sa.6, ss.1655-1658, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30 Sayı: 6
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1007/s10948-016-3769-7
  • Dergi Adı: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1655-1658
  • Anahtar Kelimeler: Two-band superconductivity, Ginzburg-Landau theory, Critical current density, Anisotropy, HEAT JUMP, SUPERCONDUCTORS, TEMPERATURE
  • Ankara Üniversitesi Adresli: Evet

Özet

In this study, the temperature dependence of anisotropy parameter of critical current density for LiFeAs superconductor is calculated. The two-band Ginzburg-Landau theory, generalized for the anisotropic effective mass in different bands, is utilized. This paper reveals that in the absence of external magnetic field, two-band theory is able to give analytical expression for the temperature dependence of anisotropy parameter of critical current density. The results of microscopical simulations for Fermi surface of LiFeAs compound are taken into account during the calculations. It is shown that such a theory is in qualitative agreement with the experimental data.