Angular effects on upper critical field in LiFeAs using two-band Ginzburg-Landau theory
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, cilt.25, sa.9, 2012 (SCI-Expanded, Scopus)
- 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.