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Nonlinear Charge Spreading Visualized in Voltage-Controlled Lateral Superlattices

DOI to cite this document:
Krauß, J. ; Wixforth, A. ; Kalameitsev, A. V. ; Govorov, A. O. ; Wegscheider, Werner ; Kotthaus, J. P.
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Date of publication of this fulltext: 30 Nov 2009 14:14


Voltage-controlled lateral potential superlattices are used to dramatically increase the lifetime of photogenerated carriers in a quantum well. These long lifetimes, together with the ability to deliberately trigger radiative recombination, enable us to directly visualize the spreading character of nonlinear Maxwell relaxation of 2D charges along narrow channels. Our system allows for temporal ...


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