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Oscillator strengths of optical transitions of a cylindrical shell : Crossed static electric and magnetic fields
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Masale, M., Tshipa, M., Nijegorodov, N. and Rowlands, G. (George) (2012) Oscillator strengths of optical transitions of a cylindrical shell : Crossed static electric and magnetic fields. Superlattices and Microstructures, Volume 51 (Number 2). pp. 265-273. doi:10.1016/j.spmi.2011.11.018 ISSN 0749-6036.
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Official URL: http://dx.doi.org/10.1016/j.spmi.2011.11.018
Abstract
The single-electron eigenstates of a cylindrical shell are determined as functions of the applied crossed electric and magnetic fields in the effective-mass approximation. The system considered consists of donor charges taken to be uniformly distributed within an inner core of infinitely long length. The core is concentrically enveloped by a semiconducting material of finite thickness; which is essentially the host material. This configuration of the donor charges sets up a spatially varying electric field nonetheless with only the radial component. In addition, a uniform magnetic field is applied parallel to the axis of symmetry of the inner core. As is well known, the axial applied magnetic field lifts the double degeneracies of the electron’s subbands characterized by the same azimuthal quantum numbers which differ only in sign. The main effect of increasing the external electric field is to elevate the various energy subbands, more or less to the same extent, to higher values. Further, evaluations of the oscillator strengths of optical transitions of the cylindrical shell are carried out within the dipole approximation. The radiation field is taken to be that of circularly polarized light incident along the axis of the core. The oscillator strengths of optical transitions are found to increase with an increase of the applied magnetic field, particularly in the regime of small magnetic fields. In contrast, the oscillator strengths of these optical interactions become suppressed as the donor charge density is increased.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Superlattices and Microstructures | ||||
Publisher: | Academic Press | ||||
ISSN: | 0749-6036 | ||||
Official Date: | February 2012 | ||||
Dates: |
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Volume: | Volume 51 | ||||
Number: | Number 2 | ||||
Page Range: | pp. 265-273 | ||||
DOI: | 10.1016/j.spmi.2011.11.018 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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