Coherent control of magnetization precession in ferromagnetic semiconductor (Ga,Mn)As

Details Coherent control of magnetization precession in ferromagnetic semiconductor (Ga,Mn)As Coherent control of magnetization precession in ferromagnetic semiconductor (Ga,Mn)As

2008-08-27

arxiv.org/abs/0808.3738v2

Applied Physics Letters 93, 232505 (2008).

Physics

Condensed Matter

Materials Science

6 pages, 3 figures, accepted in Applied Physics Letters

Scientific paper

10.1063/1.3046718

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.

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