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Effect of magnetic field on electron spectrum and probabilities of intraband quantum transitions in spherical quantum-dot-quantum-well
Affiliation:1. Department of Mathematics, College of Sciences, Yasouj University, Yasouj, Iran;2. Department of Physics, College of Sciences, Yasouj University, Yasouj, Iran;1. Groupe d′Optoélectronique des Boites Quantiques de Semiconducteurs, Ecole Normale Supérieure de l′Enseignement Technique, Mohamed V University, Rabat, Morocco;2. Centre Régional des Métiers de l′Education et de Formation (CRMEF), Tanger, Morocco;3. Laboratoire Optoélectronique et Physico-chimie des Matériaux, Faculté des Sciences, Université Ibn Tofail, Kenitra, Morocco;4. Ecole Nationale des Arts et Métiers (ENSAM), Université HassanII, Casablanca, Morocco;5. Laboratory of Condensed Matter, Faculty of Sciences and Techniques,University Hassan II, Mohammedia, Morocco;6. LCP-A2MC, Université de Lorraine, Metz, France;1. Department of Physics, Faculty of Sciences Dhar El Mehraz, Sidi Mohamed Ben Abdellah University, Dhar El Mahraz, B.P, 1796, Fez, Morocco;2. Sidi Mohammed Ben Abdellah University, Faculty of Sciences and Techniques, Route D’Imouzzer, B,P, 2202, Fez, Morocco;1. Russian-Armenian University, 123 Hovsep Emin Str., Yerevan 0051, Armenia;2. Yerevan State University, Centre of Quantum Technologies and New Materials, A. Manoogian 1, 0025 Yerevan, Armenia;3. Peter The Great Saint-Petersburg Polytechnical University, Polytechnicheskaya 29, St.Petersburg 195251, Russia;4. National Laboratory after A. I. Alikhanyan, 2 A. Alikhanian Brothers Street, 0036 Yerevan, Armenia
Abstract:The effect of magnetic field on electron energy spectrum, wave functions and probabilities of intraband quantum transitions in multilayered spherical quantum-dot-quantum-well (QDQW) CdSe/ZnS/CdSe/ZnS is studied. Computations are performed in the framework of the effective mass approximation and rectangular potential barriers model. The wave functions are expanded over the complete basis of functions obtained as exact solutions of the Schrodinger equation for the electron in QDQW without the magnetic field.It is shown that magnetic field takes off the spectrum degeneration with respect to the magnetic quantum number and changes the localization of electron in the nanostructure. The field stronger effects on the spherically-symmetric states, especially in the case of electron location in the outer potential well. The magnetic field changes more the radial distribution of probability of electron location in QDQW than the angular one. The oscillator strengths of intraband quantum transitions are calculated as functions of the magnetic field induction and their selection rules are established.
Keywords:Quantum-dot-quantum-well  Electron energy spectrum  Oscillator strength  Magnetic field
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