A rigorous quantum treatment of real-space transfer for electrons from a quantum well is developed within the density matrix and Wigner function formalisms. A continuous electron dynamical evolution (not an abrupt collision) corresponding to a phonon absorption is described. From the evaluation of the lowest-order correction to the unperturbed density matrix, the spatial and momentum distributions can be evaluated. The Wigner and Husimi functions are also shown for physical situations of interest.
TIME-RESOLVED QUANTUM-THEORY OF REAL-SPACE TRANSFER / Brunetti, Rossella; Jacoboni, Carlo; Price, Pj. - In: SEMICONDUCTOR SCIENCE AND TECHNOLOGY. - ISSN 0268-1242. - STAMPA. - 9:(1994), pp. 844-848.
TIME-RESOLVED QUANTUM-THEORY OF REAL-SPACE TRANSFER
BRUNETTI, Rossella;JACOBONI, Carlo;
1994
Abstract
A rigorous quantum treatment of real-space transfer for electrons from a quantum well is developed within the density matrix and Wigner function formalisms. A continuous electron dynamical evolution (not an abrupt collision) corresponding to a phonon absorption is described. From the evaluation of the lowest-order correction to the unperturbed density matrix, the spatial and momentum distributions can be evaluated. The Wigner and Husimi functions are also shown for physical situations of interest.
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