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      Quantum size effect on the phonon-induced Zeeman splitting in a GaAs quantum dot with Gaussian and parabolic confining potentials

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      Author
      Mukhopadhyaya, S.
      Boyacioglu, B.
      Saglam, M.
      Chatterjee, A.
      Date
      2008
      Source Title
      Physica E : Low-Dimensional Systems and Nanostructures
      Print ISSN
      1386-9477
      Publisher
      Elsevier B.V.
      Volume
      40
      Issue
      8
      Pages
      2776 - 2782
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      The Zeeman splitting of the ground and the first excited level of a Gaussian GaAs quantum dot is studied in the presence of electron-longitudinal-optical (LO)-phonon interaction incorporating the spin of the electron and is compared with the case of a parabolic dot. It is shown that the Zeeman splitting is suppressed because of the polaronic interaction and becomes strongly size dependent, but the parabolic confinement overestimates this Zeeman suppression. It is also shown that although the energy levels are split because of the spin-field interaction, the cyclotron frequencies and the Zeeman lines are independent of the electron spin in the dipole transition. © 2008 Elsevier B.V. All rights reserved.
      Keywords
      Electron-phonon interaction
      Gallium arsenide
      Quantum dots
      Zeeman splitting
      Electrons
      Phonons
      Quantum confinement
      Semiconducting gallium arsenide
      Parabolic confining potentials
      Zeeman splitting
      Semiconductor quantum dots
      Permalink
      http://hdl.handle.net/11693/23109
      Published Version (Please cite this version)
      http://dx.doi.org/10.1016/j.physe.2007.12.015
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