Hot-electron transport and ultrafast magnetization dynamics in magnetic multilayers and nanostructures following femtosecond laser pulse excitation

Abstract : Understanding and controlling the magnetization dynamics on the femtosecond timescale is becoming indispensable both at the fundamental level and to develop future technological applications. While direct laser excitation of a ferromagnetic layer was commonly used during the past twenty years, laser induced hot-electrons femtosecond pulses and subsequent transport in magnetic multilayers has attracted a lot of attention. Indeed, replacing photons by hot-electrons offers complementary information to improve our understanding of ultrafast magnetization dynamics and to provide new possibilities for manipulating the magnetization in a thin layer on the femtosecond timescale. In this review, we report on experiments of hot-electrons induced ultrafast magnetic phenomena. We discuss the role of hot-electrons transport in the ultrafast loss of magnetization in magnetic single and multilayers and how it is exploited to trigger magnetization dynamics in magnetic multilayers.
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https://hal.univ-lorraine.fr/hal-01814721
Contributor : Gregory Malinowski <>
Submitted on : Wednesday, June 13, 2018 - 2:40:21 PM
Last modification on : Thursday, October 10, 2019 - 3:47:39 PM

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Grégory Malinowski, Nicolas Bergeard, Michel Hehn, Stéphane Mangin. Hot-electron transport and ultrafast magnetization dynamics in magnetic multilayers and nanostructures following femtosecond laser pulse excitation. European Physical Journal B: Condensed Matter and Complex Systems, Springer-Verlag, 2018, 91 (98), ⟨10.1140/epjb/e2018-80555-5⟩. ⟨hal-01814721⟩

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