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主要研究具有倒置能带结构的n-HgTe/HgCdTe第三类量子阱Shubnikov-de Haas(SdH)振荡中的拍频现象.发现在量子阱中电子存在强烈的Rashba自旋分裂,通过对SdH振荡进行三种不同方法的分析:SdH振荡对1/B关系的快速傅里叶变换、SdH振荡中拍频节点分析和对SdH振荡拍频数值拟合,得到了完全一致的电子Rashba自旋分裂能量(28—36 meV).
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关键词:
- n-HgTe/HgCdTe /
- Shubnikov-de Haas振荡 /
- Rashba自旋分裂
Giant Rashba spin splitting has been found in n-HgTe/HgCdTe quantum wells with an inverted band structure by studying the beating patterns in Shubnikov-de Haas oscillations. Fast Fourier transformation, node positions, as well as numerical simulations, are used to deduce the Rashba spin-orbit splitting and result in an excellent agreement in Rashba spin splitting energy (28-36 meV).-
Keywords:
- n-HgTe/HgCdTe /
- Shubnikov-de Haas /
- Rashba spin splitting
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