Activated transport in the νT=1 exciton condensate at balanced and imbalanced densities measured in drag and counter-flow configuration

DOI to cite this document:: 10.5283/epub.12199

Wiersma, R. D. ; Lok, J. G. S. ; Kraus, Stefan ; Dietsche, W. ; Klitzing, Klaus von ; Schuh, Dieter ; Bichler, Max ; Tranitz, Hans-Peter ; Wegscheider, Werner

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Date of publication of this fulltext: 25 Jan 2010 13:22

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Abstract

We observe the total filling factor νT=1 exciton condensate in independently contacted bilayer two-dimensional electron systems in samples with minute tunnel coupling. At balanced electron densities in the layers, we find for both drag and counter-flow current configurations, thermally activated transport with a monotonic increase of the activation energy for d/ℓB<1.65 with activation energies up ...