Magnetic-field-induced second-harmonic generation in the diluted magnetic semiconductors Cd 1 − x Mn x Te
Magnetic-field-induced second-harmonic generation in the diluted magnetic semiconductors Cd 1 − x Mn x Te
复制标题
稀磁半导体 Cd 1 − x Mn x Te 中磁场感应的二次谐波产生
DOI：
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
J. Kossut
中科院分区：
文献类型：
--
作者：
I. Sänger;B. Kaminski;D. Yakovlev;R. Pisarev;M. Bayer;G. Karczewski;T. Wojtowicz;J. Kossut
Magnetic-field-induced second-harmonic generation (MFISH) has been studied in diluted magnetic semiconductors ${mathrm{Cd}}_{1ensuremath{-}x}{mathrm{Mn}}_{x}mathrm{Te}$ $(0.001lxl0.22)$ being primarily paramagnetic. Experiments have been performed in magnetic fields up to $10phantom{
ule{0.3em}{0ex}}mathrm{T}$ and MFISH signals have been observed in the spectral range near the band gap for temperatures varying from 1.8 to $200phantom{
ule{0.3em}{0ex}}mathrm{K}$. Depending on the Mn content, MFISH signals arise from two distinctly different origins related to orbital and spin quantization of the band states in magnetic field. The orbital contribution dominates for zero and very low Mn concentrations, whereas the spin contribution dominates for higher Mn contents. These contributions can be distinguished by their characteristic dependencies of the MFISH intensity on magnetic field. The orbital part of the MFISH scales as square of the field strength in accordance with a phenomenological theory. In the case of the spin quantization, the MFISH intensity scales linearly with the magnetization, a behavior which is not expected from the phenomenological model.
Magnetic-field-induced second-harmonic generation (MFISH) has been studied in diluted magnetic semiconductors ${mathrm{Cd}}_{1ensuremath{-}x}{mathrm{Mn}}_{x}mathrm{Te}$ $(0.001lxl0.22)$ being primarily paramagnetic. Experiments have been performed in magnetic fields up to $10phantom{
ule{0.3em}{0ex}}mathrm{T}$ and MFISH signals have been observed in the spectral range near the band gap for temperatures varying from 1.8 to $200phantom{
ule{0.3em}{0ex}}mathrm{K}$. Depending on the Mn content, MFISH signals arise from two distinctly different origins related to orbital and spin quantization of the band states in magnetic field. The orbital contribution dominates for zero and very low Mn concentrations, whereas the spin contribution dominates for higher Mn contents. These contributions can be distinguished by their characteristic dependencies of the MFISH intensity on magnetic field. The orbital part of the MFISH scales as square of the field strength in accordance with a phenomenological theory. In the case of the spin quantization, the MFISH intensity scales linearly with the magnetization, a behavior which is not expected from the phenomenological model.