کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8201257 | 1529817 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Finite temperature phase diagrams of a two-band model of superconductivity
ترجمه فارسی عنوان
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
چکیده انگلیسی
We explore the temperature effects in the superconducting phases of a hybridized two-band system. We show that for zero hybridization between the bands, there are two different critical temperatures. However, for any finite hybridization there is only one critical temperature at which the two gaps vanish simultaneously. We construct the phase diagrams of the critical temperature versus hybridization parameter α
and critical temperature versus critical chemical potential asymmetry δμ between the bands, identifying the superconductor and normal phases in the system. We find an interesting reentrant behavior in the superconducting phase as the parameters α or δμ, which drive the phase transitions, increase. We also find that for optimal values of both α and δμ there is a significant enhancement of the critical temperature of the model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Physics - Volume 394, July 2018, Pages 17-32
Journal: Annals of Physics - Volume 394, July 2018, Pages 17-32
نویسندگان
Heron Caldas, A. Celes, David Nozadze,