Ultrafast light-induced magnetization dynamics of ferromagnetic semiconductors.
We develop a theory of ultrafast light-induced magnetization dynamics in ferromagnetic semiconductors. We demonstrate magnetization control during femtosecond time scales via the interplay between nonlinear circularly polarized optical excitation, hole-spin damping, polarization dephasing, and Mn-hole-spin interactions. Our results show magnetization relaxation and precession for the duration of the optical pulse governed by the nonlinear optical polarizations and populations.
Chovan
J
J
Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas and Department of Physics, University of Crete, Heraklion, Greece.
Kavousanaki
E G
EG
Perakis
I E
IE