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Activated Transport in the Separate Layers that Form the νT=1 Exciton Condensate

Wiersma, R. D. ; Lok, J. G. S. ; Kraus, Stefan ; Dietsche, W. ; Klitzing, Klaus von ; Schuh, Dieter ; Bichler, Max ; Tranitz, H.-P. ; Wegscheider, Werner
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Date of publication of this fulltext: 11 Jan 2010 13:28


Abstract

We observe the total filling factor νT=1 quantum Hall state in a bilayer two-dimensional electron system with virtually no tunneling. We find thermally activated transport in the balanced system with a monotonic increase of the activation energy with decreasing d/ℓB below 1.65. In the imbalanced system we find activated transport in each of the layers separately, yet the activation energies show ...

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