Coherent manipulation of magnetization precession in ferromagnetic semiconductor (Ga,Mn)As with successive optical pumping

Abstract

We report dynamic control of magnetization precession by light alone. A ferromagnetic (Ga,Mn)As epilayer was used for experiments. Amplitude of precession was modulated to a large extent by tuning the time interval between two successive optical pump pulses which induced torques on magnetization through a non-thermal process. Nonlinear effect in precession motion was also discussed.

3 pages, 4 figures, Submitted to APL

References in corpus (4)

• Photo-induced precession of magnetization in ferromagnetic (Ga,Mn)As
• Light-Induced Magnetic Precession in (Ga,Mn)As Slabs: Hybrid Standing-Wave Damon-Eshbach Modes
• Light-induced magnetization precession in GaMnAs
• Coherent Magnetization Precession in GaMnAs induced by Ultrafast Optical Excitation

Cited by in corpus (7)

• Spin dynamics in semiconductors
• Spin-dependent phenomena and device concepts explored in (Ga,Mn)As
• Experimental observation of the optical spin transfer torque
• Experimental observation of the optical spin-orbit torque
• Manipulating Femtosecond Spin--Orbit Torques with Laser Pulse Sequences to Control Magnetic Memory States and Ringing
• Mechanism of photo-excited precession of magnetization in (Ga,Mn)As on the basis of time-resolved spectroscopy
• Collective magnetization dynamics in ferromagnetic (Ga,Mn)As mediated by photo-excited carriers