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Time resolved pump-probe scattering in MnAs/GaAs(001): A look into the dynamics of α-β Stripe domains

By Maurizio Sacchi, Carlo Spezzani, Enrico Allaria, Eugenio Ferrari, Marcello Coreno, Massimiliano Marangolo, Mahmoud Eddrief, Victor Etgens and Giovanni De Ninno

Abstract

Scattering of 130 nm radiation with 100 fs pulse length was used to monitor the α/β-striped microstructure in MnAs/GaAs(001), after a 390 nm 5 mJcm−2 pump pulse. A strong reduction of the Bragg peak intensity, corresponding to a widening of the β-stripes, takes place with a characteristic time of 15 ps. These results are relevant within the context of using MnAs/GaAs(001) as a template for the growth of ferromagnetic films, whose magnetization direction can be controlled by modifying the template temperature

Topics: Physics and Astronomy (miscellaneous)
Year: 2012
DOI identifier: 10.1063/1.4720398
OAI identifier: oai:arts.units.it:11368/2857276
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