کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1625524 | 1516432 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Similarities between Copper and Plutonium containing “high Tc” superconductors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
PuCoGa5 with 18.5Â K has an extremely high Tc for superconductivity compared with other actinide materials having Tcs around 2-3Â K. It appears to be a “high Tc superconductor” in the field of actinides. After nearly 20 years of research in high Tc superconductors only Cu containing materials have Tcs above about 30Â K (exception MgB2). BCS theory cannot explain such high transition temperatures, thus other or additional coupling mechanisms, like magnetic exchange are necessary. Mixed valence, spin holes in an antiferromagnetic lattice, small energy difference between the various valences and two-dimensionality are common features of Cu and Pu containing superconductors. It can be shown in this paper that the mechanism for superconductivity is the same for Cu and Pu containing materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 442, Issues 1â2, 13 September 2007, Pages 42-48
Journal: Journal of Alloys and Compounds - Volume 442, Issues 1â2, 13 September 2007, Pages 42-48
نویسندگان
P. Wachter,