Manfouo F, Nsangou I, Fobasso M F C, Fotue A J
Mesoscopic and Multilayers Structures Laboratory, Department of Physics, Faculty of Science,University of Dschang, P.O. Box 479 Dschang, Cameroon.
Heliyon. 2022 Sep 6;8(9):e10505. doi: 10.1016/j.heliyon.2022.e10505. eCollection 2022 Sep.
The properties of an electron weakly coupled to piezo-acoustic phonon in asymmetrical Gaussian confinement potential quantum well (AGCPQW) subject to external electric field (EF) and magnetic field (MF) has been investigated using the Lee-Low-Pines unitary transformation and linear combination operation methods. We have obtained the ground state energy (GSE) and the ground state binding energy (GSBE) of piezoelectric polaron. The effects of the EF, the MF, the range of the asymmetrical Gaussian confinement potential (RAGCP), Debye cut-off wavenumber (DCOW) and the electron-phonon coupling strength on the GSE and the GSBE are also analyzed. It is found that the GSE is an increasing function of the EF and the cyclotron frequency (CF), whereas it is a decreasing one of the RAGCP, the DCOW and electron-phonon coupling strength. The GSBE is an increasing function of the DCOW and the electron-phonon coupling strength. It is also an aggrandizing function with decreasing of the RAGCP, whereas it is a decayed one of the EF and CF. It is shown that the EF, the RAGCP, the MF, the DCOW and electron-phonon coupling strength are important factors that have great influence on the properties of the piezoelectric polaron in AGCPQW.
利用李-洛-派因斯幺正变换和线性组合运算方法，研究了处于非对称高斯限制势量子阱（AGCPQW）中的电子在外部电场（EF）和磁场（MF）作用下与压电声子弱耦合的性质。我们得到了压电极化子的基态能量（GSE）和基态结合能（GSBE）。还分析了EF、MF、非对称高斯限制势范围（RAGCP）、德拜截止波数（DCOW）以及电子-声子耦合强度对GSE和GSBE的影响。结果发现，GSE是EF和回旋频率（CF）的增函数，而它是RAGCP、DCOW和电子-声子耦合强度的减函数。GSBE是DCOW和电子-声子耦合强度的增函数。它也是随着RAGCP减小而增大的函数，而它是EF和CF的减函数。结果表明，EF、RAGCP、MF、DCOW和电子-声子耦合强度是对AGCPQW中压电极化子性质有重大影响的重要因素。
