Dresden 2009 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 9: Poster 1
HL 9.75: Poster
Montag, 23. März 2009, 14:30–17:00, P2
Electric field-induced exciton localization in quantum wells — •Karsten Sperlich1, Patrick Ludwig2, Alexei Filinov2, Michael Bonitz2, Heinrich Stolz1, Detlef Hommel3, and Arne Gust3 — 1Department of Physics, University of Rostock, Germany — 2Department of Physics, Christian-Albrechts University of Kiel, Germany — 3Institute of Solid State Phyics, University of Bremen, Germany
We report on first spectrally and spatially high resolved measurements of a recently suggested flexible electrostatic confinement for excitons in a single quantum well [1], which is created by a fine tip electrode due to the quantum-con*ned Stark effect. For this strongly correlated system we present finite-temperature quantum Monte-Carlo results and discuss the specific trap parameters at which prominent many-particle effects, including the Wigner crystal phase of spatially indirect excitons, are expected to be accessable [2].
[1] Ludwig et al., phys. stat. sol. (b) 243, No. 10, 2363 (2006)
[2] Sperlich et al., phys. stat. sol. (c) 2008