title: Interlayer tunneling in counterflow experiments on the excitonic condensate in quantum Hall bilayers.
abstract: 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.
authors.affiliation: Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, 70569 Stuttgart, Germany.
authors.forename: Y
authors.initials: Y
authors.lastname: Yoon
authors.forename: L
authors.initials: L
authors.lastname: Tiemann
authors.forename: S
authors.initials: S
authors.lastname: Schmult
authors.forename: W
authors.initials: W
authors.lastname: Dietsche
authors.forename: K
authors.initials: K
authors.lastname: von Klitzing
authors.forename: W
authors.initials: W
authors.lastname: Wegscheider