McCann, E and Falko, Vladimir (2003) Magnon-assisted transport and thermopower in ferromagnet-normal-metal tunnel junctions. Physical Review B: Condensed Matter, 68 (17). -.
Full text not available from this repository.Abstract
Magnon-assisted transport across a tunnel junction between a ferromagnet and a normal (nonmagnetic) metal is studied theoretically. A finite temperature difference across the junction produces a nonequilibrium magnetization that drives a charge current, mediated by electrons via electron-magnon interactions, from the ferromagnet into the normal metal. The corresponding thermopower coefficient is large, Ssimilar to-(k(B)/e)(k(B)T/omega(M))P-3/2(Pi(+),Pi(-),Pi(N)) where P(Pi(+),Pi(-),Pi(N)), 0less than or equal toPless than or equal to1, represents the degree of spin polarization of the current response to a bias voltage, and depends on the relative sizes of the majority Pi(+) and the minority Pi(-) band Fermi surface in the ferromagnet and in the normal metal, Pi(N).
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Physical Review B: Condensed Matter |
| Subjects: | Q Science > QC Physics |
| Departments: | Faculty of Science and Technology > Physics |
| ID Code: | 10454 |
| Deposited By: | Mrs Yaling Zhang |
| Deposited On: | 15 Jul 2008 11:23 |
| Refereed?: | Yes |
| Published?: | Published |
| Last Modified: | 20 Feb 2013 12:19 |
| Identification Number: | |
| URI: | http://eprints.lancs.ac.uk/id/eprint/10454 |
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