Angular effects on upper critical field in LiFeAs using two-band Ginzburg-Landau theory

Askerzade, İMAN; Tagiyeva (Askerbeyli), R.

doi:10.1088/0953-2048/25/9/095007

Angular effects on upper critical field in LiFeAs using two-band Ginzburg-Landau theory

Atıf İçin Kopyala

Askerzade İ., Tagiyeva (Askerbeyli) R. T.

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, cilt.25, sa.9, 2012 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 25 Sayı: 9
Basım Tarihi: 2012
Doi Numarası: 10.1088/0953-2048/25/9/095007
Dergi Adı: SUPERCONDUCTOR SCIENCE & TECHNOLOGY
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Ankara Üniversitesi Adresli: Evet

Özet

The influence of angular effects on the upper critical field is studied by using generalized two-band Ginzburg-Landau (GL) theory. It is shown that such a model is in better agreement with known experimental data for the new superconductor LiFeAs. The deviation from single-band GL theory is maximum at temperatures close to T-c. Different anisotropy of different bands leads to an increase of the anisotropy parameter of the upper critical field gamma(T) with increase of temperature.