Energy Equilibration Processes of Electrons, Magnons, and Phonons at the Femtosecond Time Scale
| Type of Publication: | Journal article |
| URI (citable link): | http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-126642 |
| Author: | Walowski, Jakob; Müller, G.; Djordjevic, Magdalena; Münzenberg, Markus; Kläui, Mathias; Vaz, Carlos A. F.; Bland, J. Anthony C. |
| Year of publication: | 2008 |
| Published in: | Physical Review Letters ; 101 (2008), 23. - 237401. - ISSN 0031-9007. - eISSN 1079-7114 |
| DOI (citable link): | https://dx.doi.org/10.1103/PhysRevLett.101.237401 |
| Summary: |
We relate the energy dissipation processes at the femtosecond (electron-spin relaxation time τel-sp) and nanosecond time scale (Gilbert relaxation τα) to the microscopic model proposed by Koopmans [Phys. Rev. Lett. 95, 267207 (2005)]. At both time scales, Elliot-Yafet scattering is proposed as the dominant contribution. We controllably manipulate the energy dissipation by transition metal doping (Pd) and rare earth doping (Dy) of a Permalloy film. While a change in τα of more than a factor of 2 is observed, τel-sp remains constant. We explain the discrepancies as due to relaxation channels not considered in the model.
|
| Subject (DDC): | 530 Physics |
| Link to License: | Terms of use |
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WALOWSKI, Jakob, G. MÜLLER, Magdalena DJORDJEVIC, Markus MÜNZENBERG, Mathias KLÄUI, Carlos A. F. VAZ, J. Anthony C. BLAND, 2008. Energy Equilibration Processes of Electrons, Magnons, and Phonons at the Femtosecond Time Scale. In: Physical Review Letters. 101(23), 237401. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.101.237401
@article{Walowski2008Energ-9187, title={Energy Equilibration Processes of Electrons, Magnons, and Phonons at the Femtosecond Time Scale}, year={2008}, doi={10.1103/PhysRevLett.101.237401}, number={23}, volume={101}, issn={0031-9007}, journal={Physical Review Letters}, author={Walowski, Jakob and Müller, G. and Djordjevic, Magdalena and Münzenberg, Markus and Kläui, Mathias and Vaz, Carlos A. F. and Bland, J. Anthony C.}, note={Article Number: 237401} }
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