本文采用垂直 Bridgman 法生长了半磁性半导体 Cd_(1-x)Mn_xTe(0.01≤x≤0.50),用 X 射射技术对生长的晶体质量进行了评价,晶体的 X 射线双晶衍射峰半宽度仅有38″,显示了极好线衍的晶体完整性。从实验中得到晶体的最佳生长速率为2mm/h...本文采用垂直 Bridgman 法生长了半磁性半导体 Cd_(1-x)Mn_xTe(0.01≤x≤0.50),用 X 射射技术对生长的晶体质量进行了评价,晶体的 X 射线双晶衍射峰半宽度仅有38″,显示了极好线衍的晶体完整性。从实验中得到晶体的最佳生长速率为2mm/h,对晶体样品的电学性能进行了 Hall测试,测试结果表明得到的晶体样品都是 p 型样品。展开更多
Starting from Kane's model and taking into account the surface electron spin-orbit interaction, we have derived the dispersion relation and Landau levels of inversion layer subband on narrow-gap semiconductors. Th...Starting from Kane's model and taking into account the surface electron spin-orbit interaction, we have derived the dispersion relation and Landau levels of inversion layer subband on narrow-gap semiconductors. The capacitance-voltage spectroscopy, magnetoconductivity oscillations and cyclotron resonance spectroscopy for the p-Hg_(1-x)Cd_x Te MIS structure sample at temperature 4.2 K have been measured. From the experimental data, the subband parameters and spin-orbit coupling intensity, which are involved in the expressions of subband dispersion relation and Landau levels, have been determined. As a result, the inversion layer electron subband dispersion relation and Landau level fan chart for HgCdTe as well as the zero field spin splitting effect, the shifting and the crossing effect of Landau levels have been described quantitatively.展开更多
文摘本文采用垂直 Bridgman 法生长了半磁性半导体 Cd_(1-x)Mn_xTe(0.01≤x≤0.50),用 X 射射技术对生长的晶体质量进行了评价,晶体的 X 射线双晶衍射峰半宽度仅有38″,显示了极好线衍的晶体完整性。从实验中得到晶体的最佳生长速率为2mm/h,对晶体样品的电学性能进行了 Hall测试,测试结果表明得到的晶体样品都是 p 型样品。
基金Project partly supported by the National Natural Science Foundation of China and partly by the A. V. Humboldt Foundation in F. R. Germany.
文摘Starting from Kane's model and taking into account the surface electron spin-orbit interaction, we have derived the dispersion relation and Landau levels of inversion layer subband on narrow-gap semiconductors. The capacitance-voltage spectroscopy, magnetoconductivity oscillations and cyclotron resonance spectroscopy for the p-Hg_(1-x)Cd_x Te MIS structure sample at temperature 4.2 K have been measured. From the experimental data, the subband parameters and spin-orbit coupling intensity, which are involved in the expressions of subband dispersion relation and Landau levels, have been determined. As a result, the inversion layer electron subband dispersion relation and Landau level fan chart for HgCdTe as well as the zero field spin splitting effect, the shifting and the crossing effect of Landau levels have been described quantitatively.
