Extrinsic Spin Hall Effect Induced by Iridium Impurities in Copper

Niimi, Y. and Morota, M. and Wei, D. H. and Deranlot, Cyrile and Basletić, Mario and Hamzić, Amir and Fert, A. and Otani, Y. (2011) Extrinsic Spin Hall Effect Induced by Iridium Impurities in Copper. Physical Review Letters, 106 (12). pp. 126601-4. ISSN 0031-9007

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We study the extrinsic spin Hall effect induced by Ir impurities in Cu by injecting a pure spin current into a CuIr wire from a lateral spin valve structure. While no spin Hall effect is observed without Ir impurity, the spin Hall resistivity of CuIr increases linearly with the impurity concentration. The spin Hall angle of CuIr, (2.1±0.6)% throughout the concentration range between 1% and 12%, is practically independent of temperature. These results represent a clear example of predominant skew scattering extrinsic contribution to the spin Hall effect in a nonmagnetic alloy.

Item Type: Article
Keywords: spin polarized transport, magnetic properties of interfaces, magnetic properties of nanostructures
Date: March 2011
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2011) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-1191458-1023
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 01 Jun 2014 20:03
Last Modified: 24 Feb 2016 15:23
URI: http://digre.pmf.unizg.hr/id/eprint/2076

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