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Proceedings Paper

Study of ultrafast magnetism by THz emission spectroscopy (Conference Presentation)
Author(s): Wentao Zhang; Pablo Maldonado; Zuanming Jin; Tom Seifert; Jacek Arabski; Guy Schmerber; Eric Beaurepaire; Mischa Bonn; Tobias Kampfrath; Peter Oppeneer; Dmitry Turchinovich

Paper Abstract

In laser-excited ferromagnetic heterostructures, both ultrafast local magnetization dynamics and spin-transport processes can lead to a THz emission. Here, we demonstrate that the THz emission spectroscopy is a powerful tool to investigate ultrafast magnetization dynamics in laser-excited magnetic systems. The polarity of emitted THz can be used to distinguish which process, local or non-local, dominates the emission of THz in a ferromagnetic heterostructure. The measured THz radiation can be used for rigorous reconstruction of ultrafast magnetization process in the laser-excited magnetic material.

Paper Details

Date Published: 31 March 2020
Proc. SPIE 11348, Terahertz Photonics, 113480W (31 March 2020);
Show Author Affiliations
Wentao Zhang, Univ. Bielefeld (Germany)
Pablo Maldonado, Uppsala Univ. (Sweden)
Zuanming Jin, Shanghai Univ. (China)
Tom Seifert, ETH Zurich (Switzerland)
Jacek Arabski, Institut de physique et chimie des matériaux de Strasbourg (France)
Guy Schmerber, Institut de physique et chimie des matériaux de Strasbourg (France)
Eric Beaurepaire, Institut de physique et chimie des matériaux de Strasbourg (France)
Mischa Bonn, Max-Planck-Institut für Polymerforschung (Germany)
Tobias Kampfrath, Freie Univ. Berlin (Germany)
Peter Oppeneer, Uppsala Univ. (Sweden)
Dmitry Turchinovich, Univ. Bielefeld (Germany)

Published in SPIE Proceedings Vol. 11348:
Terahertz Photonics
Mona Jarrahi; Sascha Preu; Dmitry Turchinovich, Editor(s)

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