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Magnetothermopower and magnon-assisted transport in ferromagnetic tunnel junctions

McCann, Edward and Falko, Vladimir (2002) Magnetothermopower and magnon-assisted transport in ferromagnetic tunnel junctions. Applied Physics Letters, 81 (19). pp. 3609-3611. ISSN 0003-6951

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Abstract

We present a model of the thermopower in a mesoscopic tunnel junction between two ferromagnetic metals based upon magnon-assisted tunneling processes. In our model, the thermopower is generated in the course of thermal equilibration between two baths of magnons, mediated by electrons. We predict a particularly large thermopower effect in the case of a junction between two half-metallic ferromagnets with antiparallel polarizations, S(AP)similar to-(k(B)/e), in contrast to S(P)approximate to0 for a parallel configuration. (C) 2002 American Institute of Physics.

Item Type: Article
Journal or Publication Title: Applied Physics Letters
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 57035
Deposited By: ep_importer_pure
Deposited On: 24 Aug 2012 16:49
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 05:30
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/57035

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