Electron relaxation by LO phonons in quantum wires

The adiabatic approximation is used to describe the electron states of weakly-one-dimensional quantum wires. A clear order is evidenced in the longitudinal optical (LO) phonon mediated transition rates with respect to the quantum numbers of the confined states involved. The average single electron relaxation time from an excited level is shown either to increase or, surprisingly; to decrease as a function of the initial energy. The relaxation of an excited population is dynamically simulated, showing the wire size dependent accelerating and energy lowering effects of an additional phenomenological intrasubband thermalization.


Published in:
Physica Status Solidi B-Basic Research, 204, 1, 265-267
Year:
1997
ISSN:
0370-1972
Note:
Swiss fed inst technol, inst micro & optoelect, dept phys, ch-1015 lausanne, switzerland. tech univ munich, walter schottky inst, d-85748 garching, germany. Ammann, C, UNIV LAUSANNE, INST THEORET PHYS, CH-1015 LAUSANNE, SWITZERLAND.
ISI Document Delivery No.: YJ654
Times Cited: 0
Cited Reference Count: 3
Cited References:
AMMAN C, 1997, PHYS REV B, V55, P2420
KAPON E, 1989, PHYS REV LETT, V63, P430
MACIEL AC, 1995, APPL PHYS LETT, V66, P3039
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 Record created 2007-08-31, last modified 2018-03-17


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