Influence of spin-orbit interactions on the polaron properties in wurtzite semiconductor quantum well

被引：5

作者：

Yeranosyan, Mkrtich A. ^{[1
,2
]}

Vartanian, Arshak L. ^{[1
]}

Vardanyan, Karen A. ^{[1
]}

机构：

[1] Yerevan State Univ, Fac Phys, Dept Solid State Phys, Yerevan 0025, Armenia

[2] State Engn Univ Armenia, Yerevan 0009, Armenia

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2016年 / 75卷

关键词：

Wurtzite nitride quantum wells; Polaron basic parameters; Rashba and Dresselhaus spin-orbit coupling terms; LASER-DIODES; SCATTERING;

D O I：

10.1016/j.physe.2015.09.034

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We have study the simultaneous effect of Rashba and Dresselhaus spin-orbit interactions on the polaron properties in wurtzite semiconductor quantum wells. The linear and cubic contributions of the bulk Dresselhaus spin-orbit coupling and the effects of phonon confinement on electron-optical-phonon interaction Hamiltonians are taken into account. We have found analytical solutions for the polaron energies as well as polaron effective mass within the range of validity of perturbation theory. It is shown that the polaron energy and effective mass correction are both significantly enhanced by the spin-orbit coupling. Wave number dependent phonon contribution on the electron energy has minima and varies differently of the spin-up and spin-down states. Polaron self-energy due to interface optical phonon modes has larger values than of the confined optical phonon modes ones. The polaron effective mass exhibits anisotropy and the contribution of the Dresselhaus spin-orbit coupling term on the polaron effective mass is dominated by Rashba one. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：330 / 335

页数：6

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