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

Stefan Günther; Carlo Spezzani; Roberta Ciprian; Cesare Grazioli; Barbara Ressel; Marcello Coreno; Luca Poletto; Paolo Miotti; Maurizio Sacchi; Giancarlo Panaccione; Vojtěch Uhlíř; Eric E. Fullerton; Giovanni De Ninno; Christian H. Back

doi:10.1103/PhysRevB.90.180407

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

Stefan Günther
, Carlo Spezzani
, Roberta Ciprian
, Cesare Grazioli
, Barbara Ressel
, Marcello Coreno
, Luca Poletto
, Paolo Miotti
, Maurizio Sacchi
, Giancarlo Panaccione
, Vojtěch Uhlíř
, Eric E. Fullerton
, Giovanni De Ninno
, Christian H. Back

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

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.

Original language	English
Article number	180407
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	90
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.90.180407
State	Published - 21 Nov 2014
Externally published	Yes

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Günther, S., Spezzani, C., Ciprian, R., Grazioli, C., Ressel, B., Coreno, M., Poletto, L., Miotti, P., Sacchi, M., Panaccione, G., Uhlíř, V., Fullerton, E. E., De Ninno, G., & Back, C. H. (2014). Testing spin-flip scattering as a possible mechanism of ultrafast demagnetization in ordered magnetic alloys. Physical Review B - Condensed Matter and Materials Physics, 90(18), Article 180407. https://doi.org/10.1103/PhysRevB.90.180407

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

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.",

author = "Stefan G{\"u}nther and Carlo Spezzani and Roberta Ciprian and Cesare Grazioli and Barbara Ressel and Marcello Coreno and Luca Poletto and Paolo Miotti and Maurizio Sacchi and Giancarlo Panaccione and Vojt{\v e}ch Uhl{\'i}{\v r} and Fullerton, \{Eric E.\} and \{De Ninno\}, Giovanni and Back, \{Christian H.\}",

note = "Publisher Copyright: {\textcopyright} 2014 American Physical Society.",

year = "2014",

month = nov,

day = "21",

doi = "10.1103/PhysRevB.90.180407",

language = "English",

volume = "90",

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Günther, S, Spezzani, C, Ciprian, R, Grazioli, C, Ressel, B, Coreno, M, Poletto, L, Miotti, P, Sacchi, M, Panaccione, G, Uhlíř, V, Fullerton, EE, De Ninno, G & Back, CH 2014, 'Testing spin-flip scattering as a possible mechanism of ultrafast demagnetization in ordered magnetic alloys', Physical Review B - Condensed Matter and Materials Physics, vol. 90, no. 18, 180407. https://doi.org/10.1103/PhysRevB.90.180407

TY - JOUR

T1 - Testing spin-flip scattering as a possible mechanism of ultrafast demagnetization in ordered magnetic alloys

AU - Günther, Stefan

AU - Spezzani, Carlo

AU - Ciprian, Roberta

AU - Grazioli, Cesare

AU - Ressel, Barbara

AU - Coreno, Marcello

AU - Poletto, Luca

AU - Miotti, Paolo

AU - Sacchi, Maurizio

AU - Panaccione, Giancarlo

AU - Uhlíř, Vojtěch

AU - Fullerton, Eric E.

AU - De Ninno, Giovanni

AU - Back, Christian H.

PY - 2014/11/21

Y1 - 2014/11/21

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/84918773768

U2 - 10.1103/PhysRevB.90.180407

DO - 10.1103/PhysRevB.90.180407

M3 - Article

AN - SCOPUS:84918773768

SN - 1098-0121

VL - 90

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 18

M1 - 180407

ER -

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

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