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Oblate spheroidal quantum dot: electronic states, direct interband light absorption and pressure dependence

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  • Davit A. Baghdasaryan
  • David B. Hayrapetyan
  • Eduard M. Kazaryan

Abstract

Exitonic states and direct interband light absorption are considered in an oblate spheroidal quantum dot. The problem of finding the one electron wave function and energy spectrum has been exactly solved. Three regimes of size quantization have been considered. Absorption edge dependence on the small semiaxes of the spheroid and its hydrostatic pressure dependencies have been obtained. It has been shown that the exact value of the electron ground state in the oblate spheroidal quantum dot coincides with high accuracy to the value of ground state in strongly oblate ellipsoidal quantum dot obtained in the framework of the adiabatic approximation. The dependences of the electron ground state energy on the hydrostatic pressure and temperature have been studied. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2015

Suggested Citation

  • Davit A. Baghdasaryan & David B. Hayrapetyan & Eduard M. Kazaryan, 2015. "Oblate spheroidal quantum dot: electronic states, direct interband light absorption and pressure dependence," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 88(9), pages 1-6, September.
    • Handle: RePEc:spr:eurphb:v:88:y:2015:i:9:p:1-6:10.1140/epjb/e2015-60284-1
    DOI: 10.1140/epjb/e2015-60284-1
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    Keywords

    Mesoscopic and Nanoscale Systems;

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