We have investigated the effect of non-equilibrium phonons on carrier relaxation dynamics in a quantum wire following ultrafast photoexcitation. We show that phonon build-up produces a considerable reduction of the cooling rate of photoexcited carriers for densities of the order of 10(6) cm(-1). In this respect, the results for quantum wires are found to be similar to the bulk case. An important consequence of the reduced dimensionality of wires is found in the non-equilibrium phonon distribution, which is populated even at very small wave vectors.
|Titolo:||Hot Phonons in Quantum Wires: A Monte Carlo Investigation|
|Data di pubblicazione:||1994|
|Digital Object Identifier (DOI):||10.1209/0295-5075/28/4/010|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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