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This article is cited in 2 scientific papers (total in 2 papers)
Reviews
Ultrafast laser-induced control of magnetic anisotropy in nanostructures
A. M. Kalashnikovaa, N. E. Khokhlova, L. A. Shelukhina, A. V. Scherbakovab a Ioffe Institute, St. Petersburg
b Experimentelle Physik II, Universität Dortmund, Dortmund, Germany
Abstract:
Employing short laser pulses with a duration below 100 fs for changing magnetic state of magnetically-ordered media has developed into a distinct branch of magnetism – femtomagnetism which aims at controlling magnetization at ultimately short timescales. Among plethora of femtomagnetic phenomena, there is a class related to impact of femtosecond pulses on magnetic anisotropy of materials and nanostructures which defines orientation of magnetization, magnetic resonance frequencies and spin waves propagation. We present a review of main experimental results obtained in this field. We consider basic mechanisms responsible for a laser-induced change of various anisotropy types: magnetocrystalline, magnetoelastic, interfacial, shape anisotropy, and discuss specifics of these processes in magnetic metals and dielectrics. We consider several examples and describe features of magnetic anisotropy changes resulting from ultrafast laser-induced heating, impact of laser-induced dynamic and quasistatic strains and resonant excitation of electronic states. We also discuss perspectives of employing various mechanisms of laser-induced magnetic anisotropy change for enabling processes prospective for developing devices. We consider precessional magnetization switching for opto-magnetic information recording, generation of high-frequency strongly localized magnetic excitations and fields for magnetic nanotomography and hybrid magnonics, as well as controlling spin waves propagation for optically-reconfigurable magnonics. We further discuss opportunities which open up in studies of ultrafast magnetic anisotropy changes because of using short laser pulses in infrared and terahertz ranges.
Keywords:
magnetic anisotropy, femtosecond laser pulses, femtomagnetism, picosecond acoustics, magnetization precession, spin waves, magnetization switching, magnon-phonon coupling.
Received: 03.08.2021 Revised: 03.08.2021 Accepted: 03.08.2021
Citation:
A. M. Kalashnikova, N. E. Khokhlov, L. A. Shelukhin, A. V. Scherbakov, “Ultrafast laser-induced control of magnetic anisotropy in nanostructures”, Zhurnal Tekhnicheskoi Fiziki, 91:12 (2021), 1848–1878
Linking options:
https://www.mathnet.ru/eng/jtf4831 https://www.mathnet.ru/eng/jtf/v91/i12/p1848
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