Probing excitonic nonlinearities in quantum wires

We report on the experimental observation of excitonic molecules (biexcitons) in high-quality V-shaped quantum wires. By means of spatially resolved near-field photoluminescence spectroscopy, first we unambiguously isolate excitons with a one-dimensional character, and secondly we present the optical transition from 1D biexciton to 1D exciton as a function of excitation power density. The density of these biexcitonic molecules is shown to increase superlinearly compared to the linear variation of exciton density.


Published in:
Physica Status Solidi B-Basic Research, 221, 1, 277-280
Year:
2000
ISSN:
0370-1972
Keywords:
Note:
Swiss Fed Inst Technol, Dept Phys, CH-1015 Lausanne, Switzerland. Electrotech Lab, Tsukuba, Ibaraki 305, Japan. Japan Sci & Technol Corp, Tsukuba, Ibaraki 305, Japan. Crottini, A, Swiss Fed Inst Technol, Dept Phys, CH-1015 Lausanne, Switzerland.
ISI Document Delivery No.: 362PZ
Times Cited: 3
Cited Reference Count: 11
Cited References:
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 Record created 2007-08-31, last modified 2018-03-17


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