The impact of low symmetry on the electronic and optical properties of quantum wires

The role of the confinement potential symmetry on the electronic and optical properties of quantum mires is systematically studied. In a wide class of quantum mires with mirror symmetry we evidence a new set of optical transitions resulting both from band mixing and Ct, symmetry breaking at zone center. Several kinds of quasi-one-dimensional excitons are predicted as well as their specific dipole coupling. Even for ultralow C-1 symmetry we find independent excitons with distinct polarization selection rules.


Published in:
Europhysics Letters, 52, 4, 420-426
Year:
2000
ISSN:
0295-5075
Keywords:
Note:
Swiss Fed Inst Technol, EPFL, Dept Phys, PHB Ecublens,Inst Micro & Optoelect, CH-1015 Lausanne, Switzerland. Dupertuis, MA, Swiss Fed Inst Technol, EPFL, Dept Phys, PHB Ecublens,Inst Micro & Optoelect, CH-1015 Lausanne, Switzerland.
ISI Document Delivery No.: 377NR
Times Cited: 9
Cited Reference Count: 18
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 Record created 2007-08-31, last modified 2018-03-18


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