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

Awari, Nilesh and Semisalova, Anna and Deinert, Jan-Christoph and Lenz, Kilian and Lindner, Jürgen and Fullerton, E. and Uhlır, V. and Li, J. and Clemens, B. and Carley, Robert and Scherz, Andreas and Kovalev, Sergey and Gensch, Michael (2020) Monitoring laser-induced magnetization in FeRh by transient terahertz emission spectroscopy. Applied Physics Letters, 117, p. 122407. American Institute of Physics (AIP). doi: 10.1063/5.0019663. ISSN 0003-6951.

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Official URL: https://aip.scitation.org/doi/pdf/10.1063/5.0019663

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 timeresolved experiments such as time resolved magneto-optic Kerr effect (MOKE) or x-ray magnetic circular dichroism. It furthermore allows to determine the degree of magnetization of materials from the distance.

Item URL in elib:https://elib.dlr.de/136264/
Document Type:Article
Title:Monitoring laser-induced magnetization in FeRh by transient terahertz emission spectroscopy
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Awari, NileshHelmholtz-Zentrum Dresden-RossendorfUNSPECIFIEDUNSPECIFIED
Semisalova, AnnaUniversität Duisburg-EsserUNSPECIFIEDUNSPECIFIED
Deinert, Jan-ChristophHelmholtz-Zentrum Dresden-RossendorfUNSPECIFIEDUNSPECIFIED
Lenz, KilianHelmholtz-Zentrum Dresden-RossendorfUNSPECIFIEDUNSPECIFIED
Lindner, JürgenHelmholtz-Zentrum Dresden-RossendorfUNSPECIFIEDUNSPECIFIED
Fullerton, E.University of CaliforniaUNSPECIFIEDUNSPECIFIED
Uhlır, V.University of CaliforniaUNSPECIFIEDUNSPECIFIED
Li, J.Stanford UniversityUNSPECIFIEDUNSPECIFIED
Clemens, B.Stanford UniversityUNSPECIFIEDUNSPECIFIED
Carley, RobertEuropean XFEL GmbHUNSPECIFIEDUNSPECIFIED
Scherz, AndreasEuropean XFEL GmbHUNSPECIFIEDUNSPECIFIED
Kovalev, SergeyHelmholtz-Zentrum Dresden-RossendorfUNSPECIFIEDUNSPECIFIED
Gensch, MichaelDLR, Institut für Optische Sensorsysteme/Technische Universität BerlinUNSPECIFIEDUNSPECIFIED
Date:September 2020
Journal or Publication Title:Applied Physics Letters
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:117
DOI:10.1063/5.0019663
Page Range:p. 122407
Publisher:American Institute of Physics (AIP)
ISSN:0003-6951
Status:Published
Keywords:THz Spektroskopie, Stand Off Messung, magnetische Materialien
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Vorhaben OptoRob (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy
Deposited By: Gensch, Michael
Deposited On:25 Sep 2020 09:00
Last Modified:28 Jun 2023 13:40

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