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Photoluminescence of one‐dimensional electron gases in cleaved‐edge overgrowth quantum wires
Author(s) -
Kristukat C.,
Gonñi A. R.,
Bichler M.,
Wegscheider W.,
Abstreiter G.,
Thomsen C.
Publication year - 2004
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/pssb.200301968
Subject(s) - photoexcitation , photoluminescence , electron , quantum wire , quantum , condensed matter physics , enhanced data rates for gsm evolution , quantum well , fermi gas , scattering , chemistry , molecular physics , materials science , quantum dot , atomic physics , excited state , physics , nanotechnology , optoelectronics , optics , quantum mechanics , telecommunications , laser , computer science
We carried out micro‐photoluminescence studies of doped multiple quantum wire structures grown by the cleaved‐edge overgrowth technique in the GaAs/AlGaAs material system. The wires are defined in a quantum well whose potential is modulated by adjacent alternating negatively and positively charged layers. We observed strong band gap renormalization effects in the quantum wires indicating that they are densely populated. The measured recombination energies are in good agreement with a simple quantum mechanical calculation. Nevertheless, the design of the sample appears to be not suitable for light scattering studies of the one dimensional (1D) electron gas, for the 1D confinement strongly depends on photoexcitation. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)