Dynamic ferromagnetic proximity effect in photoexcited semiconductors.
The spin dynamics of photoexcited carriers in semiconductors in contact with a ferromagnet is treated theoretically and compared with time-dependent Faraday rotation experiments. The long-time response of the system is found to be governed by the first tens of picoseconds in which the excited plasma interacts strongly with the intrinsic interface between the semiconductor and the ferromagnet in spite of the existence of a Schottky barrier in equilibrium.
Bauer
Gerrit E W
GE
Kavli Institute of NanoScience, Delft University of Technology, 2628 CJ Delft, The Netherlands.
Brataas
Arne
A
Tserkovnyak
Yaroslav
Y
Halperin
Bertrand I
BI
Zwierzycki
Maciej
M
Kelly
Paul J
PJ