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

28 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.}",

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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.

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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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