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Strong electric-field enhancement of the thermal emission rate of holes from the doubly ionized charge state of the EL2 defect was revealed with the deep-level transient spectroscopy in p-type GaAs and analyzed in a model of phonon-assisted tunnel effect. Similar dependence observed for the electric field directions parallel to three main crystallographic axes suggests tetrahedral symmetry of the...
In this paper the transmission coefficient for a double-barrier quantum well (DBQW) structure as a function of applied voltage is calculated, for the first time, using WKB approximation: This approach allows to discuss a dependence of several quantities characteristic of the system (e.g. the value of the coefficient, resonance voltage, charge stored in the well) on the barrier and the well parameters.
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