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Exciton Tunnelling Induced by Nonequilibrium Phonons in Slightly Asymmetric Double Quantum Wells
Author(s) -
Akimov A. V.,
Kaplyanskii A. A.,
Mazurenko D. A.,
Moskalenko E. S.,
Zhmodikov A. L.,
Challis L. J.,
Cheng T. S.,
Foxon C. T.
Publication year - 1997
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(199711)204:1<400::aid-pssb400>3.0.co;2-q
Subject(s) - phonon , quantum tunnelling , non equilibrium thermodynamics , exciton , condensed matter physics , population , quantum well , physics , spectral line , quantum , quantum mechanics , laser , demography , sociology
Studies have been made of the effect of nonequilibrium phonons on the population of coupled exciton states in GaAs/(AlGa)As double quantum wells (DQWs) with very similar widths. Comparison of luminescence spectra from the DQWs measured in the presence of nonequilibrium phonons with the spectra obtained in thermal equilibrium shows that the changes in exciton population induced by phonons could either be due to phonon‐assisted tunnelling or to exciton heating.