| 四种材料超晶格的价带自旋劈裂的研究 |
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| 引用本文： | 田园,陈维友.四种材料超晶格的价带自旋劈裂的研究[J].发光学报,1997,18(1):90-93. |
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| 作者姓名： | 田园 陈维友 |
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| 作者单位： | 1. 中国科学院长春物理研究所, 长春130021;2. 吉林大学电子工程系, 长春130023 |
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| 摘 要： | 自从Esaki和Tau1]发现量子阱和超晶格以来,人们已对由两种材料构成的量子阱及超晶格的能带结构进行了大量的研究.陈维友等人2]已研究了三种材料构成的超晶格的能带结构.本文将利用文献2]报道的计算方法,对由四种材料构成的超晶格价带自旋劈裂的变化规律进行研究.
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| 关 键 词： | 能带结构 超晶格 自旋劈裂 |
| 收稿时间： | 1996-05-17 |
STUDY ON THE SPIN SPLITTING OF THE ENERGY BAND FOR SUPERLATTICES WITH QUART CONSTITUTENT MATERIALS |
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| Tian Yuan,a,Cheng Weiyou,a,Peng Yuheng,b,Zhang Baolin,a.STUDY ON THE SPIN SPLITTING OF THE ENERGY BAND FOR SUPERLATTICES WITH QUART CONSTITUTENT MATERIALS[J].Chinese Journal of Luminescence,1997,18(1):90-93. |
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| Authors: | Tian Yuan a Cheng Weiyou a Peng Yuheng b Zhang Baolin a |
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| Institution: | 1. Changchun Institute of Physics, Academia Sciences, Changchun 130021;2. Department of Electronic Engineering, Jilin University, Changchun 130023 |
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| Abstract: | The valence band spin splitting for a superlattice composed of AlAs, Al y Ga 1- y As, Al x Ga 1- x As and GaAs is studied in this paper. It is shown that when the superlattice unit cell is asymmetrcal about the centre of the unit cell, the band corresponding to spin up and spin down will spit. The spitting mainly takes place at the stronger interaction. The stronger is the interaction, the larger is the spin splitting. When y is increased for x being fixed 0.05, the spin splitting does not cause much variation. However, when x is increased for y being fixed 0 9, the spin splitting produces a large rise and fall. |
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| Keywords: | energy band structure superlattice spin splitting |
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