| 四种材料构成的超晶格能带结构的研究 |
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| 引用本文： | 田园,彭宇恒.四种材料构成的超晶格能带结构的研究[J].光子学报,1997,26(7):599-603. |
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| 作者姓名： | 田园 彭宇恒 |
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| 作者单位： | [1]中国科学院长春物理研究所 [2]吉林大学电子工程系 |
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| 摘 要： | 本文对由AIAs,AIyGl-yAs、AIxGal-xAs和GaAs四种材料构成的超晶格价带的自旋劈裂进行了研究.通过改变材料组分和层厚,发现当超晶格单胞对其中心点是不对称结构时,对应的自旋向上和自徒向下的子带产生劈裂,而且劈裂主要发生在重空穴带和轻空穴带相互作用较强的地方.
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| 关 键 词： | 能带结构 超晶格 自旋劈裂 |
| 收稿时间： | 1996-10-21 |
STUDY ON THE BAND STRUCTURE OF SUPERLATTICES COMPOSED WITH FOUR MATERIALS |
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| Tian Yuan,Peng Yuheng,Chen Weiyou,Zhang Baolin,Jin Yixin.STUDY ON THE BAND STRUCTURE OF SUPERLATTICES COMPOSED WITH FOUR MATERIALS[J].Acta Photonica Sinica,1997,26(7):599-603. |
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| Authors: | Tian Yuan Peng Yuheng Chen Weiyou Zhang Baolin Jin Yixin |
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| Institution: | 1. Changchun Institute of Physics, Chinese Academy of Sciences, Changchun 130O21;2. Dept. of Electronic Eng., Jilin Univ, Changchun 130O21 |
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| Abstract: | We discuss the spin - splitting on the valence - band state of quart - constituent materialsuperlattices : AlAs, AlyGal-yAs, Alx Gal-xAs and GaAs. By varying the material compositions or thelayer thickness,we observed that the bands corresponding to the spin-up and spin-down split when thesuperlattice unit-cell is asymmetrical about the cell center. Moreover,the splitting mainly occurs at theregion where the heavy hole and light hole interact on each other strongly. |
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| Keywords: | Energy band structure Superlattices Spin-splitting |
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