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Proceedings Paper

Optically induced Fe magnetization reversal in Fe/MnAs/GaAs(001)
Author(s): C. Spezzani; E. Ferrari; E. Allaria; F. Vidal; L. Lounis; A. Ciavardini; R. Delaunay; F. Capotondi; E. Pedersoli; M. Coreno; C. Svetina; L. Raimondi; M. Zangrando; R. Ivanov; I. Nikolov; A. Demidovich; M. Danailov; G. De Ninno; H. Popescu; M. Eddrief; M. Kiskinova; M. Sacchi
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Paper Abstract

Magnetization control without applying magnetic fields has potential for applications in sensors and devices. In Fe/MnAs/GaAs(001), the Fe magnetization can be modified by acting on the MnAs microstructure via temperature control, without applying external magnetic fields. Here we use an optical laser pulse to vary the local temperature and an x-ray free-electron laser pulse to probe the induced magnetic and structural dynamics in a time-resolved resonant scattering experiment, both pulses having ~100 fs duration. Modifications of the MnAs microstructure take place within a few ps, followed by a slower dynamics driven by thermal diffusion. We show that a single optical laser pulse can reverse the Fe magnetization locally, the process being driven not by the fast modifications of the MnAs structure, but rather by its slower return to equilibrium.

Paper Details

Date Published: 12 May 2015
PDF: 5 pages
Proc. SPIE 9512, Advances in X-ray Free-Electron Lasers Instrumentation III, 95120I (12 May 2015); doi: 10.1117/12.2184710
Show Author Affiliations
C. Spezzani, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
Lab. de Physique des Solides (France)
E. Ferrari, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
Univ. degli Studi Trieste (Italy)
E. Allaria, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
F. Vidal, Institut des NanoSciences de Paris, UPMC, Paris (France)
L. Lounis, Institut des NanoSciences de Paris, UPMC, Paris (France)
A. Ciavardini, CNR–ISM (Italy)
R. Delaunay, LCPMR, UPMC, Paris (France)
F. Capotondi, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
E. Pedersoli, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
M. Coreno, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
C. Svetina, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
L. Raimondi, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
M. Zangrando, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
R. Ivanov, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
I. Nikolov, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
A. Demidovich, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
M. Danailov, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
G. De Ninno, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
Univ. of Nova Gorica (Slovenia)
H. Popescu, Synchrotron SOLEIL (France)
M. Eddrief, Institut des NanoSciences de Paris, UPMC, Paris (France)
M. Kiskinova, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
M. Sacchi, Institut des NanoSciences de Paris, UPMC, Paris (France)
Synchrotron SOLEIL (France)


Published in SPIE Proceedings Vol. 9512:
Advances in X-ray Free-Electron Lasers Instrumentation III
Sandra G. Biedron, Editor(s)

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