Srichandan, S. and Wimmer, S. and Poellath, S. and Kronseder, M. and Ebert, H. and Back, C. H. and Strunk, C. (2018) Magnon scattering in the transport coefficients of CoFe thin films. PHYSICAL REVIEW B, 98 (2): 020406. ISSN 2469-9950, 2469-9969
Full text not available from this repository.Abstract
Resistivity rho, thermopower S, and thermal conductivity kappa were measured simultaneously on a set of CoFe alloy films. Variation of the Co content x(Co) allows for a systematic tuning of the Fermi level through the band structure, and the study of the interplay between electronic and magnetic contributions to the transport coefficients. While band-structure and magnon effects in rho and kappa are rather weak, they turn out to be very significant in S. A decomposition of S into Mott and magnon drag contributions results in a systematic evolution between the two limiting cases of pure Fe and pure Co. At low temperatures, we find an interesting sign change of the curvature of S(T) that indicates a corresponding sign change of the magnon drag.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | COHERENT-POTENTIAL APPROXIMATION; ELECTRONIC TRANSPORT; SPIN CALORITRONICS; DISORDERED ALLOYS; TEMPERATURE; RESISTIVITY; METALS; IRON; SPINTRONICS; THERMOPOWER; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Mar 2020 07:45 |
| Last Modified: | 06 Mar 2020 07:45 |
| URI: | https://pred.uni-regensburg.de/id/eprint/14236 |
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