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40961001

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[求助] 如何计算短周期(InAs)n/(GaSb)m superlattice中的电子和空穴受限能级?(n,m=1,20)

最近在看短周期超晶格的文章,
PHYSICAL REVIEW B 77, 115314 2008,”Pseudopotential calculations of band gaps and band edges of short-period (InAs)n/(GaSb)m superlattices with different substrates, layer orientations, and interfacial bonds”
PRL 100, 186403 (2008),”Band-Gap Design of Quaternary (In,Ga)(As,Sb) Semiconductors
via the Inverse-Band-Structure Approach”
PHYSICAL REVIEW B 78, 161302(R)R 2008, “Using superlattice ordering to reduce the band gap of random (In,Ga)As/InP alloys
to a target value via the inverse band structure approach”
都是Paulo Piquini and Alex Zunger(计算方面的大牛)做的。他们计算了 (InAs)n/(GaSb)m(n,m=1,20)超晶格的电子和空穴受限态能级,导师一定要我学习他的方法并重复出来。这里n,m=1,20,是原子层厚度的超晶格,因此传统的有效质量理论不再适用了(导师说的)。我想直接用VASP算出能带结构,给出CBM和VBM,导师说这不是受限态。
看了他们的文章,我一头雾水,理论部分半懂不懂,正在看书。但是用的啥软件都不知道,不知从哪做起,希望各位虫友给点建议,谢谢。
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