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Thermally excited spin current and giant magnetothermopower in metals with embedded ferromagnetic nanoclusters

Tsyplyatyev, Oleksandr and Kashuba, Oleksiy and Falko, Vladimir (2006) Thermally excited spin current and giant magnetothermopower in metals with embedded ferromagnetic nanoclusters. Physical Review B, 74 (13). ISSN 1098-0121

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    Abstract

    We show that a thermally excited spin current naturally appears in metals with embedded ferromagnetic nanoclusters. When such materials are subjected to a magnetic field, a spin current can be generated by a temperature gradient across the sample as a signature of electron-hole symmetry breaking in a metal due to the electron spin-flip scattering from polarized magnetic moments. Such a spin current can be observed via a giant magnetothermopower which tracks the polarization state of the magnetic subsystem and is proportional to the magnetoresistance. Our theory explains the recent experiment on Co clusters in copper by S. Serrano-Guisan [Nat. Mater.5, 730 (2006)].

    Item Type: Article
    Journal or Publication Title: Physical Review B
    Additional Information: http://prb.aps.org/abstract/PRB/v74/i13/e132403
    Subjects: Q Science > QC Physics
    Departments: Faculty of Science and Technology > Physics
    ID Code: 57019
    Deposited By: ep_importer_pure
    Deposited On: 24 Aug 2012 16:06
    Refereed?: Yes
    Published?: Published
    Last Modified: 20 Dec 2013 14:14
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/57019

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