Spin-induced optical second harmonic generation in the centrosymmetric magnetic semiconductors EuTe and EuSe.

@article{Kaminski2009SpininducedOS,
  title={Spin-induced optical second harmonic generation in the centrosymmetric magnetic semiconductors EuTe and EuSe.},
  author={Brunon Kaminski and M. Lafrentz and Roman V. Pisarev and Dmitri R Yakovlev and Victor V. Pavlov and V. A. Lukoshkin and Alfredo Barbosa Henriques and Gunther Springholz and Guenther Dr Bauer and E. Abramof and P. H. O. Rappl and Manfred Bayer},
  journal={Physical review letters},
  year={2009},
  volume={103 5},
  pages={
          057203
        }
}
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… CONTINUE READING

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