Bound polaron in a quantum pseudodot under Rashba effect |
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| Affiliation: | 1. Laboratoire des Interfaces et des Matériaux avancés (LIMA), Tunisia;2. Laboratoire de Micro-Optoélectronique et Nanostructures (LMON), Tunisia;3. Unité de Recherche sur les Hétéro-Epitaxies et Applications (URHEA), Tunisia;4. Université Monastir, Faculté des Sciences de Monastir, Département de Physique, Avenue de l’environnement, 5019 Monastir, Tunisia;1. School of Electrical Engineering, Xi’an Aeronautical University, Xi’an 710077, China;2. Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong 723001, China;1. Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud, 150, 22290-180, Urca, Rio de Janeiro, RJ, Brazil;2. Instituto de Física Armando Dias Tavares, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, 20550-900, Maracanã, Rio de Janeiro, RJ, Brazil |
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| Abstract: | In the present work, the influence of Rashba effect on bound polaron in a quantum pseudodot is studied. Using the Lee–Low–Pines unitary transformation method and the Pekar type variational procedure, we have derived an expression for the bound polaron ground state energy. The ground state energy as functions of the wave vector, the electron–phonon coupling strength, and quantum confinement size is obtained by considering different Coulomb bound potentials. It is found that (i) the ground state energy is decreased with raising the Coulomb bound potential, the electron–phonon coupling strength, and quantum confinement size. (ii) The ground state energy increases when the wave vector is increasing. (iii) The ground state energy splits into two branches (spin-up and spin-down) due to the Rashba effect. |
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| Keywords: | Quantum pseudodot Polaron Rashba effect |
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