Publication detail

Testing spin-flip scattering as a possible mechanism of ultrafast demagnetization in ordered magnetic alloys

Günther, S. Spezzani, C. Ciprian, R. Grazioli, C. Ressel, B. Coreno, M. Poletto, L. Miotti, P. Sacchi, M. Panaccione, G. Uhlíř, V. Fullerton, E. De Ninno, G. Back, C.

English title

Testing spin-flip scattering as a possible mechanism of ultrafast demagnetization in ordered magnetic alloys

Type

journal article in Web of Science

Language

en

Original abstract

We use element-resolved IR-pump/extreme ultraviolet-probe experiments to disentangle the ultrafast interplay of the magnetic sublattices of an ordered crystalline magnetic alloy. As a paradigmatic example, we investigate the case of the FeRh alloy, which shows a delayed response for the different components. Furthermore, a detailed time-resolved magneto-optic study shows that the data can be analyzed by only assuming Elliot-Yafet-like scattering, as the underlying mechanism for ultrafast demagnetization, resulting in an unexpected nonmonotonic dependence of the spin-flip rate, as a function of quenching.

English abstract

We use element-resolved IR-pump/extreme ultraviolet-probe experiments to disentangle the ultrafast interplay of the magnetic sublattices of an ordered crystalline magnetic alloy. As a paradigmatic example, we investigate the case of the FeRh alloy, which shows a delayed response for the different components. Furthermore, a detailed time-resolved magneto-optic study shows that the data can be analyzed by only assuming Elliot-Yafet-like scattering, as the underlying mechanism for ultrafast demagnetization, resulting in an unexpected nonmonotonic dependence of the spin-flip rate, as a function of quenching.

Keywords in English

ultrafast demagnetization; pump-probe; spin-flip scattering

Released

21.11.2014

ISSN

1098-0121

Volume

90

Number

18

Pages from–to

180407-1–180407-5

Pages count

5

BIBTEX


@article{BUT155244,
  author="Vojtěch {Uhlíř},
  title="Testing spin-flip scattering as a possible mechanism of ultrafast demagnetization in ordered magnetic alloys",
  year="2014",
  volume="90",
  number="18",
  month="November",
  pages="180407-1--180407-5",
  issn="1098-0121"
}