Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
1 PublicationMonitoring laser-induced magnetization in FeRh by transient terahertz emission spectroscopy
Awari, N.; Semisalova, A.; Deinert, J.-C.; Lenz, K.; Lindner, J.; Fullerton, E.; Uhlir, V.; Li, J.; Clemens, B.; Carley, R.; Scherz, A.; Kovalev, S.; Gensch, M.
In this study, a conceptually different approach for investigating magnetic phase transitions in ultra-thin films is presented. THz emission from a laser-excited material is used to monitor the magnetization dynamics during the laser-driven antiferromagnetic to ferromagnetic transition in FeRh. The emitted THz signal is calibrated against static magnetometry data measurements, giving a direct measure of the absolute magnetic moment of the sample on the sub-picosecond timescale. The technique is, therefore, highly complementary to conventional time-resolved experiments such as time resolved magneto-optic Kerr effect (MOKE) or x-ray magnetic circular dichroism.
Keywords: Magnetization dynamics; terahertz; ultrafast; FeRh
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Applied Physics Letters 117(2020), 122407-1-122407-6
Online First (2020) DOI: 10.1063/5.0019663
Cited 8 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-31565
Publ.-Id: 31565