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A precursor mechanism triggering the second magnetization peak phenomenon in superconducting materials

التفاصيل البيبلوغرافية
العنوان: A precursor mechanism triggering the second magnetization peak phenomenon in superconducting materials
المؤلفون: M. Polichetti, A. Galluzzi, K. Buchkov, V. Tomov, E. Nazarova, A. Leo, G. Grimaldi, S. Pace
المصدر: Scientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
بيانات النشر: Nature Portfolio, 2021.
سنة النشر: 2021
المجموعة: LCC:Medicine
LCC:Science
مصطلحات موضوعية: Medicine, Science
الوصف: Abstract The correlation in type-II superconductors between the creep rate S and the Second Magnetization Peak (SMP) phenomenon which produces an increase in Jc, as a function of the field (H), has been investigated at different temperatures by starting from the minimum in S(H) and the onset of the SMP phenomenon detected on a FeSe0.5Te0.5 sample. Then the analysis has been extended by considering the entire S(H) curves and comparing our results with those of many other superconducting materials reported in literature. In this way, we find evidence that the flux dynamic mechanisms behind the appearance of the SMP phenomenon in Jc(H) are activated at fields well below those where the critical current starts effectively to increase. Moreover, the found universal relation between the minimum in the S(H) and the SMP phenomenon in Jc(H) shows that both can be attributed to a sequential crossover between a less effective pinning (losing its effectiveness at low fields) to a more effective pinning (still acting at high fields), regardless of the type-II superconductor taken into consideration.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2045-2322
Relation: https://doaj.org/toc/2045-2322
DOI: 10.1038/s41598-021-86728-8
URL الوصول: https://doaj.org/article/03fd478f241c4cd8b89c6c2bcd1b5764
رقم الأكسشن: edsdoj.03fd478f241c4cd8b89c6c2bcd1b5764
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:20452322
DOI:10.1038/s41598-021-86728-8