کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1820169 | 1525779 | 2007 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the theory of ferromagnet/superconductor heterostructures
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
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چکیده انگلیسی
We investigate ferromagnet/superconductor/ferromagnet (F/S/F) hybrid structures in the dirty limit, described by the Usadel equations. More precisely, the critical temperature is studied as a function of the ferromagnetic layer thickness for parallel and antiparallel orientations of the ferromagnetic moments. We show that an asymmetry in the ferromagnetic layers may lead to an enhancement of the spin-valve effect, while spin-flip scattering leads to its decrease, which could explain the small experimentally measured values. We also show that the interplay between a superconducting and a ferromagnetic layers implies an induced magnetic moment in the superconductor that is non-monotonic with the ferromagnetic layer thickness as well as a spatially modulated electronic moment in the ferromagnet.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 454, Issues 1â2, 15 April 2007, Pages 61-69
Journal: Physica C: Superconductivity - Volume 454, Issues 1â2, 15 April 2007, Pages 61-69
نویسندگان
M. Fauré, A.I. Buzdin, D. Gusakova,