title: Coherent magnetization precession in ferromagnetic (Ga,Mn)As induced by picosecond acoustic pulses.
abstract: We show that the magnetization of a thin ferromagnetic (Ga,Mn)As layer can be modulated by picosecond acoustic pulses. In this approach a picosecond strain pulse injected into the structure induces a tilt of the magnetization vector M, followed by the precession of M around its equilibrium orientation. This effect can be understood in terms of changes in magnetocrystalline anisotropy induced by the pulse. A model where only one anisotropy constant is affected by the strain pulse provides a good description of the observed time-dependent response.
authors.affiliation: Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 194021 St. Petersburg, Russia.
authors.forename: A V
authors.initials: AV
authors.lastname: Scherbakov
authors.forename: A S
authors.initials: AS
authors.lastname: Salasyuk
authors.forename: A V
authors.initials: AV
authors.lastname: Akimov
authors.forename: X
authors.initials: X
authors.lastname: Liu
authors.forename: M
authors.initials: M
authors.lastname: Bombeck
authors.forename: C
authors.initials: C
authors.lastname: Brüggemann
authors.forename: D R
authors.initials: DR
authors.lastname: Yakovlev
authors.forename: V F
authors.initials: VF
authors.lastname: Sapega
authors.forename: J K
authors.initials: JK
authors.lastname: Furdyna
authors.forename: M
authors.initials: M
authors.lastname: Bayer