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Influence of carbon doping on the reversible magnetization of MgB2 single crystalsстатья
Информация о цитировании статьи получена из
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Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Eisterer M., Krutzler C., Zehetmayer M., Weber H.W., Kazakov S.M., Karpinski J.
- Журнал: Physica C: Superconductivity and its Applications
- Том: 460
- Год издания: 2007
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 606
- Последняя страница: 607
- DOI: 10.1016/j.physe.2007.04.200
- Аннотация: The reversible magnetization of Mg(B1-xCx)(2) Single crystals with varying carbon content (x = 0-0.095) was measured by SQUID magnetometry. It was found to be strongly influenced by the two-band character of this material. At low magnetic fields charge carriers of both bands contribute to superconductivity and to diamagnetism. At high fields the pi-band is suppressed and the sigma-band mainly determines the magnetization. This allows us to extract information on both bands by analyzing the reversible magnetization in terms of two band Ginzburg-Landau (GL) theory. The "intrinsic" magnetic penetration increases in both bands with increasing carbon content, but the sigma-band remains crucial for the upper critical field. Changes in the field dependence of the resulting "effective" penetration depth by carbon doping are discussed. (c) 2007 Elsevier B.V. All rights reserved.
- Добавил в систему: Казаков Сергей Михайлович