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Hot-electron energy-loss rate via PO-phonon scattering in CdZnSe/ZnSe quantum wire

Authors
Journal
Physica B Condensed Matter
0921-4526
Publisher
Elsevier
Publication Date
Volume
389
Issue
2
Identifiers
DOI: 10.1016/j.physb.2006.06.160
Keywords
  • Quantum Wire
  • Confined And Interface Phonons
  • Intersubband Transition
  • Energy-Loss Rate
Disciplines
  • Physics

Abstract

Abstract The hot-electron energy-loss rate conditioned by confined and interface polar-optical phonons for a Cd 0.35Zn 0.65Se quantum wire embedded in ZnSe medium is investigated theoretically. It is shown that the inclusion of the polar-optical phonon confinement effects is crucial for accurate calculation of the energy-loss rate in quantum wire. Taking into account the nonequilibrium phonon populations, the hot-electron energy-loss rate is derived by a model, which includes the lowest subband occupation and the phonon confinement effects. The contribution of intersubband transitions to electron energy-loss rate as well as the relaxation time of the electron temperature with and without hot-phonon bottleneck effect is estimated.

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