Journal
PHYSICAL REVIEW LETTERS
Volume 104, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.116802
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Funding
- BMBF (German Ministry of Education and Research) [01BM456, 01BM0900]
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The effect of tunneling on the transport properties of quantum Hall double layers in the regime of the excitonic condensate at a total filling factor one is studied in counterflow experiments. If the tunnel current I is smaller than a critical I(C), tunneling is large and is effectively shorting the two layers. For I > I(C) tunneling becomes negligible. Surprisingly, the transition between the two tunneling regimes has only a minor impact on the features of the filling-factor one state as observed in magnetotransport, but at currents exceeding I(C) the resistance along the layers increases rapidly.
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