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

Thomas Blank, K.A. Grishunin, E.A. Mashkovich, M.V. Logunov, A.K. Zvezdin, A.V. Kimel

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)
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Abstract

THz magnetization dynamics of antiferromagnetically coupled spins in ferrimagnetic
Tm3Fe5O12 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.
Original languageEnglish
Article number037203
Number of pages6
JournalPhysical Review Letters
Volume127
Issue number3
DOIs
Publication statusPublished - 14 Jul 2021
Externally publishedYes

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