TY - JOUR
T1 - Level repulsion in nanophotoluminescence spectra from single GaAs quantum wells
AU - von Freymann, G.
AU - Neuberth, U.
AU - Deubel, M.
AU - Wegener, M.
AU - Khitrova, G.
AU - Gibbs, H. M.
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2002/5/15
Y1 - 2002/5/15
N2 - In a recent paper, Intonti et al. attributed [Phys. Rev. Lett. 87, 076801 (2001)] a 3-me V peak in the autocorrelation spectrum of low-temperature nanophotoluminescence spectra of a single disordered GaAs quantum well to level repulsion, i.e., to the statistical analog of an avoided crossing due to overlapping wave functions in the disorder potential. Our data, which reproduce their findings very nearly, are taken to an additional test employing filter functions, which clearly shows that the 3-me V peak is associated with low-energy states-in striking contrast to the level repulsion scenario. By a careful analysis of the high-energy states, however, we are able to identify a second peak around 1.5 me V which we attribute to level repulsion. The experiments are compared with simple model calculations, which support our interpretation.
AB - In a recent paper, Intonti et al. attributed [Phys. Rev. Lett. 87, 076801 (2001)] a 3-me V peak in the autocorrelation spectrum of low-temperature nanophotoluminescence spectra of a single disordered GaAs quantum well to level repulsion, i.e., to the statistical analog of an avoided crossing due to overlapping wave functions in the disorder potential. Our data, which reproduce their findings very nearly, are taken to an additional test employing filter functions, which clearly shows that the 3-me V peak is associated with low-energy states-in striking contrast to the level repulsion scenario. By a careful analysis of the high-energy states, however, we are able to identify a second peak around 1.5 me V which we attribute to level repulsion. The experiments are compared with simple model calculations, which support our interpretation.
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U2 - 10.1103/PhysRevB.65.205327
DO - 10.1103/PhysRevB.65.205327
M3 - Article
AN - SCOPUS:0037095383
VL - 65
SP - 2053271
EP - 2053279
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 20
M1 - 205327
ER -