Zero-bias conductance anomaly in bilayer quantum Hall systems

Yogesh N. Joglekar; Allan H. MacDonald

doi:10.1142/s0217979202013249

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Zero-bias conductance anomaly in bilayer quantum Hall systems

Yogesh N. Joglekar·Allan H. MacDonald

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Abstract

Bilayer quantum Hall system at total filling factor $ν=1$ shows a rich variety of broken symmetry ground states because of the competition between the interlayer and intralayer Coulomb interactions. When the layers are sufficiently close, a bilayer system develops spontaneous interlayer phase-coherence that manifests itself through a spectacular enhancement of the zero-bias interlayer tunneling conductance. We present a theory of this tunneling conductance anomaly, and show that the zero-bias conductance is proportional to the square of the {\it quasiparticle} tunneling amplitude.

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Yogesh N. Joglekar, Allan H. MacDonald. 2002-03-25. Zero-bias conductance anomaly in bilayer quantum Hall systems. https://doi.org/10.1142/s0217979202013249

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