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The temperature-dependent surface critical magnetic field (H-C3) of magnetic superconductors: Applied to lead bismuth (Pb82Bi18) superconductors

TitleThe temperature-dependent surface critical magnetic field (H-C3) of magnetic superconductors: Applied to lead bismuth (Pb82Bi18) superconductors
Publication TypeJournal Article
Year of Publication2560
Authorsอาภาพงศ์ ชั่งจันทร์
JournalJournal of Physics and Chemistry of Solids
Volume107
Pagination32-35
Date PublishedAugust 2017
Type of Articleบทความวิจัย
ISSN0022-3697
KeywordsGinzburg-Landau Theory, Magnetic superconductors, Surface critical magnetic field
Abstract

In this research, we investigated the surface critical magnetic field (HC3) of magnetic superconductors by the Ginzburg-Landau (GL) Theory. We used the 1st GL equation to calculated HC3 by variation method analytically and modified to the temperature dependence properties. The analytical formula of surface critical magnetic field depended on magnetic properties of material: susceptibility and differential susceptibility. In addition, the temperature-dependent surface critical magnetic field was studied by four models; Chen's model, Zhu's model, Shanenko's model and Changjan & Udomsamuthirun ’s model. Focused on four models, our numerical calculation based on Changjan & Udomsamuthirun's model could find a good agreement with the experimental data of Pb82Bi18 superconductors vicinity the critical temperature scenery.

URLhttps://www.sciencedirect.com/science/article/abs/pii/S0022369716313592
DOI10.1016/j.jpcs.2017.03.022