Theory of tunneling resonances of bilayer electron systems in a strong magnetic field

We develop a theory for the anomalous interlayer conductance peaks observed in bilayer electron systems at $\ensuremath{\nu}=1.$ Our model shows that the size of the peak at zero bias decreases rapidly with increasing in-plane magnetic field, but its location is unchanged. The $I\ensuremath{-}V$ characteristic is linear at small voltages, in agreement with experimental observations. In addition we make quantitative predictions for how the interlayer conductance peaks vary in position with in-plane magnetic field at high voltages. Finally, we predict novel bistable behavior at intermediate voltages.