2008/08/31 by E. Rozkotova, E. Rozkotová, Petr Němec +11
Engineering · Materials Science · Physics and Astronomy · #Condensed matter physics #Diamond and Carbon-based Materials Research #Ferromagnetism #Field (mathematics) #Kerr effect #Magnetic field #Magnetic moment #Magnetic semiconductor #Magnetization #Magnetization dynamics #Magneto-Optical Properties and Applications #Materials science #Nonlinear system #Physics #Precession #Quantum mechanics #Rotation (mathematics) #Semiconductor Quantum Structures and Devices #Spin (aerodynamics) #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.3046718
published as Applied Physics Letters 93, 232505 (2008). · 6 pages, 3 figures, accepted in Applied Physics Letters
arxiv created 2008/12/02 · openalex publication_date 2008/12/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report single-color, time-resolved magneto-optical measurements in ferromagnetic semiconductor (Ga,Mn)As. We demonstrate coherent optical control of the magnetization precession by applying two successive ultrashort laser pulses. The magnetic field and temperature dependent experiments reveal the collective Mn-moment nature of the oscillatory part of the time-dependent Kerr rotation, as well as contributions to the magneto-optical signal that are not connected with the magnetization dynamics.