Abstract

A high and narrow peak of the interlayer differential tunneling conductance was found recently in experiments on double-layer electron systems in the quantum Hall effect regime at a total filling of the Landau levels νT=1. This peak is a consequence of phase coherence that is established in the system owing to the Bose condensation of electron-hole pairs with components belonging to different layers. The influence of a parallel magnetic field on the tunneling conductance of double-layer systems of small size is considered. It is shown that at finite temperatures the magnetic-field dependence of the height of the peak of the tunneling conductance has a form that resembles a Fraunhofer diffraction pattern.

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