Tunneling at ${\nu }_T=1$ in Quantum Hall Bilayers

Abstract

Interlayer tunneling measurements in the strongly correlated bilayer quantized Hall phase at ${\nu }_T=1$ are reported. The maximum, or critical current for tunneling at ${\nu }_T=1$, is shown to be a well-defined global property of the coherent phase, insensitive to extrinsic circuit effects and the precise configuration used to measure it, but also exhibiting a surprising scaling behavior with temperature. Comparisons between the experimentally observed tunneling characteristics and a recent theory are favorable at high temperatures, but not at low temperatures where the tunneling closely resembles the dc Josephson effect. The zero-bias tunneling resistance becomes extremely small at low temperatures, vastly less than that observed at zero magnetic field, but nonetheless remains finite. The temperature dependence of this tunneling resistance is similar to that of the ordinary in-plane resistivity of the quantum Hall phase.

13 pages, 11 postscript figures. Final published version

References in corpus (14)

• Exciton Condensation and Perfect Coulomb Drag
• Critical tunneling currents in the regime of bilayer excitons
• Dominant parameters for the critical tunneling current in bilayer exciton condensates
• Interlayer Transport in Bilayer Quantum Hall Systems
• Coherent Tunneling in Exciton Condensates of Bilayer Quantum Hall Systems
• Coupling of Josephson Currents in Quantum Hall Bilayers
• Area dependence of interlayer tunneling in strongly correlated bilayer 2D electron systems at ${\nu }_T=1$
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• Dissipation and Tunnelling in Quantum Hall Bilayers
• Critical currents and self organization in quantum Hall bilayers
• Quantum and Classical Dissipative Effects on Tunnelling in Quantum Hall Bilayers
• Transport in Coherent Quantum Hall Bilayers
• Tunneling between Dilute GaAs Hole Layers
• Breakdown of counterflow superfluidity in a disordered quantum Hall bilayer

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• Andreev Reflection Spectroscopy of Topological Superconductor Candidate Nb${}_x$Bi${}_2$Se${}_3$
• Emergence of Interlayer Coherence in Twist-Controlled Graphene Double Layers
• Voltage Induced Dynamical Quantum Phase Transitions in Exciton Condensates
• Tunneling between two systems of interacting chiral fermions
• Role of the compensating current in the weak Josphson coupling regime: An extended study on excitonic Josephson junctions