Publication detail

Monitoring laser-induced magnetization in FeRh by transient terahertz emission spectroscopy

Awari, N . Semisalova, A. Deinert, JC. Lenz, K. Lindner, J. Fullerton, E. Uhlir, V. Li, J. Clemens, B. Carley, R. Scherz, A. Kovalev, S. Gensch, M.

Original Title

Monitoring laser-induced magnetization in FeRh by transient terahertz emission spectroscopy

Type

journal article in Web of Science

Language

English

Original Abstract

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. (C) 2020 Author(s).

Keywords

SPIN DYNAMICS; ULTRAFAST; FILMS

Authors

Awari, N .; Semisalova, A.; Deinert, JC.; Lenz, K.; Lindner, J.; Fullerton, E.; Uhlir, V.; Li, J.; Clemens, B.; Carley, R.; Scherz, A.; Kovalev, S.; Gensch, M.

Released

21. 9. 2020

Publisher

AMER INST PHYSICS

Location

MELVILLE

ISBN

1077-3118

Periodical

Applied Physics Letters

Year of study

117

Number

12

State

United States of America

Pages from

122407-1

Pages to

122407-6

Pages count

6

URL

https://aip.scitation.org/doi/10.1063/5.0019663