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Investigating Coherent Magnetization Control with Ultrashort THz Pulses

Xuan, Liu and Jal, Emmanuelle and Delaunay, Renaud and Jarrier, Romain and Sorin Chiuzbaian, Gheorghe and Malinowski, Grégory and Golz, Torsten and Zapolnova, Ekaterina and Pan, Rui and Stojanovic, Nikola and Luning, Jan and Vodungbo, Boris (2021) Investigating Coherent Magnetization Control with Ultrashort THz Pulses. Applied Sciences. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/app12031323. ISSN 2076-3417.

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Abstract

Coherent terahertz control of magnetization dynamics is an area of current interest due to its great potential for the realization of magnetization control on ultrafast timescales in commercial devices. Here we report on an experiment realized at the THz beamline of the free electron laser FLASH at DESY which offers a tunable terahertz radiation source and spontaneously synchronized free-electron laser X-ray pulses to resonantly probe the magnetization state of a ferromagnetic film. In this proof-of-principle experiment, we have excited a thin Permalloy film at different THz wavelengths and recorded the induced magnetization dynamics with photons resonantly tuned to the Ni M2,3 absorption edge. For THz pump pulses including higher orders of the undulator source we observed demagnetization dynamics, which precise shape depended on the employed fundamental wavelength of the undulator source. Analyzing the shape in detail, we can reconstruct the temporal profile of the electric field of the THz pump pulse. This offers a new method for the realization of an in-situ terahertz beamline diagnostic which will help researchers to adjust the pulse characteristics as needed, for example, for future studies of THz induced coherent control of magnetization dynamics.

Item URL in elib:https://elib.dlr.de/188281/
Document Type:Article
Title:Investigating Coherent Magnetization Control with Ultrashort THz Pulses
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Xuan, LiuLaboratoire de Chimie Physique-Matière et Rayonnement (LPCMR), Sorbonne Université, Centre National de la Recherche Scientifique (CNRS), 75252 Paris, FranceUNSPECIFIEDUNSPECIFIED
Jal, EmmanuelleLaboratoire de Chimie Physique-Matière et Rayonnement (LPCMR), Sorbonne Université, Centre National de la Recherche Scientifique (CNRS), 75252 Paris, FranceUNSPECIFIEDUNSPECIFIED
Delaunay, RenaudLaboratoire de Chimie Physique-Matière et Rayonnement (LPCMR), Sorbonne Université, Centre National de la Recherche Scientifique (CNRS), 75252 Paris, FranceUNSPECIFIEDUNSPECIFIED
Jarrier, RomainLaboratoire de Chimie Physique-Matière et Rayonnement (LPCMR), Sorbonne Université, Centre National de la Recherche Scientifique (CNRS), 75252 Paris, FranceUNSPECIFIEDUNSPECIFIED
Sorin Chiuzbaian, GheorgheLaboratoire de Chimie Physique-Matière et Rayonnement (LPCMR), Sorbonne Université, Centre National de la Recherche Scientifique (CNRS), 75252 Paris, FranceUNSPECIFIEDUNSPECIFIED
Malinowski, GrégoryInstitut Jean Lamour (UMR 7198), Université de Lorraine, Centre National de la Recherche Scientifique (CNRS), 54011 Nancy, FranceUNSPECIFIEDUNSPECIFIED
Golz, TorstenDeutsches Elektronen-Synchrotron, 22607 Hamburg, GermanyUNSPECIFIEDUNSPECIFIED
Zapolnova, EkaterinaDeutsches Elektronen-Synchrotron (DESY), HamburgUNSPECIFIEDUNSPECIFIED
Pan, RuiDeutsches Elektronen-Synchrotron (DESY), HamburgUNSPECIFIEDUNSPECIFIED
Stojanovic, NikolaDLR, Institut für Optische SensorsystemeUNSPECIFIEDUNSPECIFIED
Luning, JanLaboratoire de Chimie Physique-Matière et Rayonnement (LPCMR), Sorbonne Université, Centre National de la Recherche Scientifique (CNRS), 75252 Paris, FranceUNSPECIFIEDUNSPECIFIED
Vodungbo, BorisLaboratoire de Chimie Physique-Matière et Rayonnement (LPCMR), Sorbonne Université, Centre National de la Recherche Scientifique (CNRS), 75252 Paris, FranceUNSPECIFIEDUNSPECIFIED
Date:21 December 2021
Journal or Publication Title:Applied Sciences
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI:10.3390/app12031323
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:2076-3417
Status:Published
Keywords:X-ray free electrons laser; ultrafast demagnetization; terahertz radiations
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 - OptoRob [SY]
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy
Deposited By: Stojanovic, Nikola
Deposited On:15 Sep 2022 09:45
Last Modified:19 Sep 2022 09:46

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