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.
Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas and Department of Physics, University of Crete, Heraklion, Greece.
J
J
Chovan
E G
EG
Kavousanaki
I E
IE
Perakis