کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5496510 | 1399853 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The threshold temperature where type-I and type-II interchange in mesoscopic superconductors at the Bogomolnyi limit
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
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چکیده انگلیسی
In this work we discuss the HâT phase diagram for mesoscopic squared superconducting samples at the Bogomolnyi limit, where the Ginzburg-Landau constant κ=1/2. We calculate Hp(T), the vortex penetration field, and Hu(T) the upper critical field. Through the study of the temperature dependence on the Hp, it is possible to distinguish the region where the magnetic field penetrates into the sample, like a type-I or a type-II superconductor. It permits to determine the threshold temperature Tâ(L,H) where the phase transition from type-I to type-II occurs for some different sizes L of the mesoscopic superconducting samples. The calculation of the upper critical field Hu(T), for these samples, shows that, these two curves, Hp(T) and Hu(T), overlap at the threshold temperature mentioned above. The magnetization of the system was calculated for all sizes studied in this work, and for temperatures above and below Tâ(L,H). This study confirms the existence of the threshold temperature, Tâ(L,H), where type-I and type-II interchange in mesoscopic superconductors at the Bogomolnyi limit.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 381, Issue 14, 11 April 2017, Pages 1248-1254
Journal: Physics Letters A - Volume 381, Issue 14, 11 April 2017, Pages 1248-1254
نویسندگان
IsaÃas G. de Oliveira,