THz-Scale Field-Induced Spin Dynamics in Ferrimagnetic Iron Garnets.

Blank, T G H; Grishunin, K A; Mashkovich, E A; Logunov, M V; Zvezdin, A K; Kimel, A V

Blank, T G H; Grishunin, K A; Mashkovich, E A; Logunov, M V; Zvezdin, A K; Kimel, A V.

Afiliação

Blank TGH; Radboud University, Institute for Molecules and Materials, 6525 AJ Nijmegen, The Netherlands.
Grishunin KA; Radboud University, Institute for Molecules and Materials, 6525 AJ Nijmegen, The Netherlands.
Mashkovich EA; MIREA-Russian Technological University, 119454 Moscow, Russia.
Logunov MV; Radboud University, Institute for Molecules and Materials, 6525 AJ Nijmegen, The Netherlands.
Zvezdin AK; University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia.
Kimel AV; Kotel'nikov Institute of Radioengineering and Electronics, 125009 Moscow, Russia.

Phys Rev Lett ; 127(3): 037203, 2021 Jul 16.

Article em En | MEDLINE | ID: mdl-34328781

ABSTRACT

ABSTRACT

THz magnetization dynamics of antiferromagnetically coupled spins in ferrimagnetic Tm_{3}Fe_{5}O_{12} is excited by a picosecond single-cycle pulse of a magnetic field and probed with the help of the magneto-optical Faraday effect. Data analysis combined with numerical modeling shows that the dynamics corresponds to the exchange mode excited by the Zeeman interaction of the THz magnetic field with the spins. We argue that THz-pump-IR-probe experiments on ferrimagnets offer a unique tool for quantitative studies of dynamics and mechanisms to control antiferromagnetically coupled spins.

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Texto completo: 1 Bases de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Holanda