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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2009, Volume 90, Issue 1, Pages 64–68
(Mi jetpl470)
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This article is cited in 19 scientific papers (total in 19 papers)
CONDENSED MATTER
Observation of the ‘inverse’ spin valve effect in a $\mathrm{Ni/V/Ni}$ trilayer system
P. V. Leksinab, R. I. Salikhovb, I. A. Garifullinb, H. Vinzelberga, V. Kataeva, R. Klingelera, L. R. Tagirovc, B. Büchnera a Leibniz Institute for Solid State and Material Research IFW Dresden,
D-01171 Dresden, Germany
b Zavoisky Physical Technical Institute RAS, 420029
Kazan, Russia
c Kazan State University
Abstract:
An experimental study of magnetic and superconducting properties of a trilayer $\mathrm{Ni/V/Ni}$ thin film system grown on single-crystalline $\mathrm{MgO(001)}$ substrate is reported. The field dependence of the superconducting transition temperature $T_c$ for samples comprising Ni layers with similar values of the coercive field $H_c$ reveals no anomalies. However, in samples with different thicknesses of the nickel layers the difference in $H_c$ amounts up to $\Delta H_c\sim1.8$ kOe, thus enabling to manipulate the relative orientations of the layers' magnetization by an external magnetic field. Surprisingly, for these samples the $T_c$ for the parallel orientation of the magnetizations of the $\mathrm{Ni}$ layers is higher, in a certain magnetic field range, than for the antiparallel one, at odds with theoretical predictions. Possible reasons of this contradiction are discussed.
Received: 01.06.2009
Citation:
P. V. Leksin, R. I. Salikhov, I. A. Garifullin, H. Vinzelberg, V. Kataev, R. Klingeler, L. R. Tagirov, B. Büchner, “Observation of the ‘inverse’ spin valve effect in a $\mathrm{Ni/V/Ni}$ trilayer system”, Pis'ma v Zh. Èksper. Teoret. Fiz., 90:1 (2009), 64–68; JETP Letters, 90:1 (2009), 59–63
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