Resistance due to vortex motion in the ν=1 bilayer quantum Hall superfluid -: art. no. 064514

The longitudinal and Hall resistances have recently been measured for quantum Hall bilayers at total filling nu=1 in the superfluid state with interlayer pairing, both for currents flowing parallel to one another and for counterflowing currents in the two layers. Here I examine the contribution to these resistances from the motion of unpaired vortices in these systems, developing some possible explanations of various qualitative features of these data.