Spin-induced optical second harmonic generation in the centrosymmetric magnetic semiconductors EuTe and EuSe.
Spectroscopy of the centrosymmetric magnetic semiconductors EuTe and EuSe reveals spin-induced optical second harmonic generation (SHG) in the band gap vicinity at 2.1-2.4 eV. The magnetic field and temperature dependence demonstrates that the SHG arises from the bulk of the materials due to a novel type of nonlinear optical susceptibility caused by the magnetic dipole contribution combined with spontaneous or induced magnetization. This spin-induced susceptibility opens access to a wide class of centrosymmetric systems by harmonics generation spectroscopy.
Kaminski
B
B
Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund, Germany.
Lafrentz
M
M
Pisarev
R V
RV
Yakovlev
D R
DR
Pavlov
V V
VV
Lukoshkin
V A
VA
Henriques
A B
AB
Springholz
G
G
Bauer
G
G
Abramof
E
E
Rappl
P H O
PH
Bayer
M
M