Photoemission study of the electronic structure of a (GaAs)2/(AlAs)2 superlattice.

Photoemission study of the electronic structure of a (GaAs)2/(AlAs)2 superlattice.
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(GaAs)2/(AlAs)2 超晶格电子结构的光电研究。

DOI:
10.1103/physrevb.44.3787
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发表时间:
1991
期刊:
Physical review. B, Condensed matter
影响因子:
--
通讯作者:
Ley
Ley
中科院分区:
--
文献类型:
--
作者:
Cai;Riley;Leckey;Usher;Fraxedas;Ley

文献摘要

被引文献

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我们报告了短周期超晶格 (GaAs) 2/(AlAs) 2 电子结构的角度分辨光电子研究结果。这些结果支持 Gopalan 等人的第一原理线性松饼锡轨道方法计算。特别是,在 5.3 eV 的结合能(相对于价带最大值)处,可以清楚地看到由 [001] 生长方向的周期性减小引起的 0.5 eV 带隙。
We report results from an angle-resolved photoemission study of the electronic structure of the short-period superlattice (GaAs) 2/(AlAs) 2. These results support the first-principles linear-muffin-tin-orbital-method calculation of Gopalan et al. In particular, a 0.5-eV band gap caused by the reduced periodicity in the [001] growth direction is clearly seen at a binding energy (relative to the valence-band maximum) of 5.3 eV.