Elastic and piezoelectric fields around a quantum wire of zincblende heterostructures with interface elasticity effect

Elastic and piezoelectric fields around a quantum wire of zincblende heterostructures with interface elasticity effect
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具有界面弹性效应的闪锌矿异质结构量子线周围的弹性场和压电场

DOI:
10.1007/s00339-018-1722-2
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发表时间:
2018-03
影响因子:
2.7
通讯作者:
Liu Yifei
Liu Yifei
中科院分区:
材料科学4区
文献类型:
--
作者:
Ye Wei;Liu Yifei

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本文提出了具有界面弹性效应的量子线周围的弹性场和压电场的求解方法。找到了沿[111]晶体取向生长的锌闪锌矿QWR/基体异质结构的压电势场的闭合解,并以InAs/InP异质结构为例给出了数值结果。矩阵中的压电势取决于界面弹性、量子阱半径和刚度。结果表明,界面弹性可以显著改变界面附近的弹性场和压电场。此外,当量子水阱的弹性特性被认为是各向异性时,与通常的各向同性假设相反,发现压电势在界面附近明显,但在远离界面的位置偏差可以忽略不计。
This work formulates the solutions to the elastic and piezoelectric fields around a quantum wire (QWR) with interface elasticity effect. Closed-form solutions to the piezoelectric potential field of zincblende QWR/matrix heterostructures grown along [111] crystallographic orientation are found and numerical results of InAs/InP heterostructures are provided as an example. The piezoelectric potential in the matrix depends on the interface elasticity, the radius and stiffness of the QWR. Our results indicate that interface elasticity can significantly alter the elastic and piezoelectric fields near the interface. Additionally, when the elastic property of the QWR is considered to be anisotropic in contrary to the common isotropic assumption, piezoelectric potentials are found to be distinct near the interface, but the deviations are negligible at positions far away from the interface.
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