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Письма в Журнал экспериментальной и теоретической физики, 2010, том 91, выпуск 6, страницы 329–333
(Mi jetpl679)
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Эта публикация цитируется в 182 научных статьях (всего в 182 статьях)
КОНДЕНСИРОВАННЫЕ СРЕДЫ
Superconducting triplet spin valve
Ya. V. Fominova, A. A. Golubovb, T. Yu. Karminskayac, M. Yu. Kupriyanovc, R. G. Deminovd, L. R. Tagirovd a L. D. Landau Institute for Theoretical Physics, Russian Academy of Sciences
b Faculty of Science and Technology and MESA+ Institute of Nanotechnology, University of Twente
c Nuclear Physics Institute, Moscow State University
d Physics Faculty, Kazan State University
Аннотация:
We study the critical temperature $T_c$ of SFF trilayers (S is a singlet superconductor, F is a ferromagnetic metal), where the long-range triplet superconducting component is generated at noncollinear magnetizations of the F layers. We demonstrate that $T_c$ can be a nonmonotonic function of the angle $\alpha$ between the magnetizations of the two F layers. The minimum is achieved at an intermediate $\alpha$, lying between the parallel (P, $\alpha=0$) and antiparallel (AP, $\alpha=\pi$) cases. This implies a possibility of a “triplet” spin-valve effect: at temperatures above the minimum $T_c^\mathrm{Tr}$ but below $T_c^\mathrm P$ and $T_c^\mathrm{AP}$, the system is superconducting only in the vicinity of the collinear orientations. At certain parameters, we predict a reentrant $T_c(\alpha)$ behavior. At the same time, considering only the P and AP orientations, we find that both the “standard” ($T_c^\mathrm P<T_c^\mathrm{AP}$) and “inverse” ($T_c^\mathrm P>T_c^\mathrm{AP}$) switching effects are possible depending on parameters of the system.
Поступила в редакцию: 10.02.2010
Образец цитирования:
Ya. V. Fominov, A. A. Golubov, T. Yu. Karminskaya, M. Yu. Kupriyanov, R. G. Deminov, L. R. Tagirov, “Superconducting triplet spin valve”, Письма в ЖЭТФ, 91:6 (2010), 329–333; JETP Letters, 91:6 (2010), 308–313
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/jetpl679 https://www.mathnet.ru/rus/jetpl/v91/i6/p329
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