Energy Equilibration Processes of Electrons, Magnons, and Phonons at the Femtosecond Time Scale

Walowski, Jakob; Müller, G.; Djordjevic, Magdalena; Münzenberg, Markus; Kläui, Mathias; Vaz, Carlos A. F.; Bland, J. Anthony C.

Energy Equilibration Processes of Electrons, Magnons, and Phonons at the Femtosecond Time Scale

Dateien

2008_PhysRevLett_Energy_neugescannt.pdfGröße: 1.26 MBDownloads: 538

Datum

2008

Autor:innen

Walowski, Jakob

Müller, G.

Djordjevic, Magdalena

Münzenberg, Markus

Kläui, Mathias

Vaz, Carlos A. F.

Bland, J. Anthony C.

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik
Zukunftskolleg

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review Letters. 2008, 101(23), 237401. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.101.237401

Zusammenfassung

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.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

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. 2008, 101(23), 237401. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.101.237401

BibTex

@article{Walowski2008Energ-9187,
  year={2008},
  doi={10.1103/PhysRevLett.101.237401},
  title={Energy Equilibration Processes of Electrons, Magnons, and Phonons at the Femtosecond Time Scale},
  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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