Picosecond dynamics of the photoinduced spin polarization in epitaxial (Ga,Mn)as films
Publication year
2004Source
Physical Review Letters, 92, 23, (2004), pp. 1-4, article 237203ISSN
Publication type
Article / Letter to editor
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Organization
Ultrafast Spectroscopy of Correlated Materials
Spectroscopy of Solids and Interfaces
Journal title
Physical Review Letters
Volume
vol. 92
Issue
iss. 23
Page start
p. 1
Page end
p. 4
Subject
Scanning Probe Microscopy; Spectroscopy of Solids and InterfacesAbstract
Static and time-resolved magneto-optical spectra of the ferromagnetic semiconductor (Ga,Mn)As show that a pulsed photoexcitation with a fluence of 10 microJ/cm(2) is equivalent to the application of an external magnetic field of about 1 mT, which relaxes with a decay time of 30 ps. This relaxation is attributed to the spin relaxation of electrons in the conduction band and is found to be not affected by interactions with Mn ions.
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- Faculty of Science [37139]
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