title: Influence of magnetic anisotropy on laser-induced precession of magnetization in ferromagnetic semiconductor (Ga, Mn)As.
abstract: The laser-induced precession of magnetization in (Ga, Mn)As samples with different magnetic anisotropy was studied by the time-resolved magneto-optical method. We observed that the dependence of the precession amplitude on the external magnetic field depends strongly on the magnetic anisotropy of (Ga, Mn)As and we explain this phenomenon in terms of competing cubic and uniaxial anisotropies. We also show that the corresponding anisotropy fields can be deduced from the magnetic field dependence of the precession frequency.
authors.affiliation: Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 06 Prague, Czech Republic.
authors.forename: Tesarová
authors.initials: T
authors.lastname: Nad'a
authors.forename: Rozkotová
authors.initials: R
authors.lastname: Eva
authors.forename: Reichlová
authors.initials: R
authors.lastname: Helena
authors.forename: Malý
authors.initials: M
authors.lastname: Petr
authors.forename: Novák
authors.initials: N
authors.lastname: Vít
authors.forename: Cukr
authors.initials: C
authors.lastname: Miroslav
authors.forename: Jungwirth
authors.initials: J
authors.lastname: Tomás
authors.forename: Nemec
authors.initials: N
authors.lastname: Petr