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Journal of Physical Studies 15(2), Article 2706 [7 pages] (2011)
DOI: https://doi.org/10.30970/jps.15.2706 THEORY FOR THE OPTIMAL GEOMETRIC DESIGN OF A TWO-BARRIER NANO DETECTOR WORKING AT THE QUANTUM TRANSITIONS BETWEEN TWO LOWEST QUASI-STATIONARY ELECTRON STATESM. V. Tkach, Ju. O. Seti, V. O. Matijek
Fedkovych Chernivtsi National University, 2, Kotsyubinskogo St., |
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The theory of active conductivity of a nano system is developed within the model of rectangular potentials and different electron effective masses in different elements of plane two-barrier resonance tunnel structure. For the experimentally investigated resonance tunnel structure with the In$_{0.53}$Ga$_{0.47}$As wells and In$_{0.52}$Al$_{0.48}$As barriers the analysis of the conductivity of a monochrome electronic beam interacting with electro-magnetic field is performed in the approximation of a small signal. It is shown that the optimal choice of potential wells and barriers sizes at the minimal life times of electrons in the two lowest quasi-stationary states brings to the maximal conductivity of a nano detector working in the terra Hertz range of frequencies.
PACS number(s): 73.21.Fg, 73.90.+f, 72.30.+q, 73.63.Hs