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Effect of the anisotropic parabolic potential on the polaron’s properties in asymmetric Gaussian quantum wells
Journal of Nanophotonics ( IF 1.5 ) Pub Date : 2021-01-01 , DOI: 10.1117/1.jnp.15.016001
Yan-Bo Geng 1 , Zhao-Hua Ding 1 , Ying Zhao 1 , Yong Sun 1 , Jing-Lin Xiao 1
Affiliation  

In the current study, the linear combination operator (LCO) and Lee–Low–Pines unitary transformation (LLPUT) are adopted to verify the effect of the anisotropic parabolic potential (APP) on the polaron’s properties in the asymmetric Gaussian quantum well (AGQW). Relations of the vibrational frequency (VF) and the ground state energy (GSE) of weak coupling polaron in the AGQW for GaAs crystal varying with the effective confinement strengths of the APP, the barrier height, and range of the asymmetric Gaussian confinement potential (AGCP) are derived. The numerical calculated results illustrate that the GSE and VF of the weak coupling polaron in the AGQW can increase according to the effective confinement strengths’ growth for given values of the barrier height and range of the AGCP. They will increase by increasing the barrier height of the AGCP. However, they are decreasing functions of the range of the AGCP for the determined values of the effective confinement strengths and the barrier height of the AGCP.

中文翻译:

各向异性抛物线势对非对称高斯量子阱中极化子性质的影响

在本研究中,采用线性组合算子(LCO)和Lee–Low–Pines一元变换(LLPUT)来验证各向异性抛物线电势(APP)对非对称高斯量子阱(AGQW)中极化子性质的影响。 。GaAs晶体的AGQW中弱耦合极化子的振动频率(VF)和基态能量(GSE)的关系随APP的有效限制强度,势垒高度和非对称高斯限制电位(AGCP)的范围而变化)。数值计算结果表明,对于给定的AGCP势垒高度和范围值,AGQW中弱耦合极化子的GSE和VF可以根据有效约束强度的增长而增加。它们将通过增加AGCP的屏障高度而增加。
更新日期:2021-01-10
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