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Transmission Coefficient for a Double-Barrier Quantum Well Structure

100%
Kaczmarek E., Szkiełko W.
Acta Physica Polonica A
|
1991
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vol. 80
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issue 3
441-444
EN
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.
2
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Electric Field Enhanced Emission of Holes from the Double Donor Level of the EL2 Defect in GaAs

81%
Mąkosa A., Wosiński T., Szkiełko W.
Acta Physica Polonica A
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1992
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vol. 82
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issue 5
813-816
EN
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 defect which is consistent with its identification as the arsenic antisite.
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