Spin-dependent scattering of conduction electrons in Co/Cu multilayers / Lobov I. D.,Kirillova M. M.,Makhnev A. A.,Milyaev M. A.,Romashev L. N.,Ustinov V. V. // JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - 2015. - V. 389, l. . - P. 169-175.

ISSN/EISSN:

0304-8853 / 1873-4766

Type:

Article

Abstract:

The magnetotransport properties of giant magnetoresistive Co/Cu multilayers with Cu layer thickness t(Cu) varied from 8 to 27 A are studied using the magnetorefractive effect Interfacial relaxation Limes tau(up arrow(down arrow))(i) and scattering probabilities P-i(up arrow(down arrow)), and interface scattering asymmetry gamma(Co/Cu) of conduction electron were obtained from the magnetoreflection in the intraband absorption region. The greatest changes of tau(i) and P-i occur in a spin-up current channel with increasing t(Cu). Due to a size quantization of transverse component of a quasi-momentum of free electrons in Cu layers, the magnitude of tau(up arrow)(i) oscillates reaching the maximum values at t(Cu) corresponding to the first two peaks of antiferromagnetic interlayer exchange coupling, while the tau(down arrow)(i) experiences only slight changes keeping low values at all thicknesses of Cu layer. It was found that condition tau(up arrow)(i) approximate to tau(Cu) is critical to minimize the scattering of spin-up conduction electrons at Co/Cu interface. In this case, in the region of the first peak of antiferromagnetic interlayer exchange the spin asymmetry coefficient gamma approximate to 0.86, and the probability of electron scattering P-i(up arrow) is approximately equal to 0.02, which ensures the maximum values of giant magnetoresistance and magnetorefractive effect. (C) 2015 Elsevier B.V. All rights reserved

Author keywords:

Co/Cu multilayers; Magnetotransport properties; Electron scattering; Magnetoreflection QUANTUM-WELL STATES; GIANT MAGNETORESISTANCE; PERPENDICULAR MAGNETORESISTANCE; MAGNETIC MULTILAYERS; OPTICAL CONSTANTS; SUPERLATTICES; LAYERS

DOI:

10.1016/j.jmmm.2015.04.063

Web of Science ID:

ISI:000354185600028

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	SEP 1
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-4766
Keywords-Plus	QUANTUM-WELL STATES; GIANT MAGNETORESISTANCE; PERPENDICULAR MAGNETORESISTANCE; MAGNETIC MULTILAYERS; OPTICAL CONSTANTS; SUPERLATTICES; LAYERS
Research-Areas	Materials Science; Physics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Physics, Condensed Matter
Author-Email	i\_lobov@imp.uran.ru
ResearcherID-Numbers	Romashev, Lazar/J-7644-2013 Lobov, Ivan/J-9318-2013 Milyaev, Mikhail/J-8070-2013 Makhnev, Alexander/J-4842-2013 Ustinov, Vladimir/G-7501-2011
ORCID-Numbers	Romashev, Lazar/0000-0002-6051-4543 Lobov, Ivan/0000-0001-5812-3298 Milyaev, Mikhail/0000-0001-7828-3571 Makhnev, Alexander/0000-0003-2868-6713 Ustinov, Vladimir/0000-0002-5155-7947
Funding-Acknowledgement	Russian Ministry of Education and Science {[}14.Z50.31.0025, 14.120.14.1540-SS]; Russian Foundation for Basic Research {[}13-02-00749]; state assignment ``Spin{''} {[}12-P-2-1051, 01201463330]
Funding-Text	We thank V. Proglyado and N. Bannikova for preparation and characterization of the samples, and we thank N. Bebenin for fruitful discussions, This work was performed as part of the state assignment ``Spin{''} No. 01201463330 (Project 12-P-2-1051) with the support of the Russian Ministry of Education and Science (Contract nos. 14.Z50.31.0025 and 14.120.14.1540-SS), and the Russian Foundation for Basic Research (Project 13-02-00749).
Number-of-Cited-References	35
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	26
Journal-ISO	J. Magn. Magn. Mater.
Doc-Delivery-Number	CH6ZP