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Journal of Physical Studies 21(1/2), Article 1702 [10 pages] (2017)
DOI: https://doi.org/10.30970/jps.21.1702 PHOTON- AND PHONON-ASSISTED TRANSPORT OF ELECTRONS IN RESONANT TUNNELING STRUCTURESM. V. Tkach, Ju. O. Seti, O. M. Voitsekhivska, O. Yu. Pytiuk
Chernivtsi National University, 2, Kotsiubynsky St., UA-58012, Chernivtsi, |
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The quantum mechanical theory of photon-and phonon assisted tunneling of electrons through the open multilayered nanostructures being the cascades of quantum cascade detector and quantum cascade laser is developed. The theory of electronic dynamic conductivity and spectral parameters (resonance energies and widths) of their quasi-stationary states is established within the effective mass approximation and models of rectangular and triangular potential profiles of resonant tunneling structure, respectively.
It is shown that an open model of multilayered resonant tunneling structure, comparing with the closed one, adequately describes the physical processes in cascades and their elements (active regions, extractors, injectors) and, with respect to the experimental data, gives an opportunity to calculate and reveal their optimal geometrical design without any fitting parameters.
PACS number(s): 78.67.De, 63.20.Kr, 72.10.Di, 85.30.Mn, 81.07.St