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:
Journal Article
Journal or Publication Title:
Physical review B
Additional Information:
http://prb.aps.org/abstract/PRB/v74/i13/e132403
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
57019
Deposited By:
Deposited On:
24 Aug 2012 15:06
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Jul 2020 03:34