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:
Journal Article
Journal or Publication Title:
Applied Physics Letters
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
57035
Deposited By:
Deposited On:
24 Aug 2012 15:49
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Jul 2020 03:34