Vortices, tunneling and deconfinement in bilayer excitonic quantum Hall superfluid

Abstract

The physics of vortices, instantons and deconfinement is studied for layered superfluids in connection to bilayer quantum Hall systems at filling fraction nu=1. We develop an effective gauge theory taking into account both vortices and instantons induced by interlayer tunneling. The renormalization group flow of the gauge charge and the instanton fugacity shows that the coupling of the gauge field to vortex matter produces a continuous transition between the confining phase of free instantons and condensed vortices and a deconfined gapless superfluid where magnetic charges are bound into dipoles. The interlayer tunneling conductance and the layer imbalance induced inhomogeneous exciton condensate are discussed in connection to experiments.

4 revtex pages, added interlayer tunneling conductance, published version

References in corpus (4)

• On the stability of U(1) spin liquids in two dimensions
• Counterflow measurements in strongly correlated GaAs hole bilayers: evidence for electron-hole pairing
• Vanishing Hall Resistance at High Magnetic Field in a Double Layer Two-Dimensional Electron System
• Tunneling, dissipation, and superfluid transition in quantum Hall bilayers

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• Quantitative description of Josephson-like tunneling in ${\nu }_T=1$ quantum Hall bilayers
• Area dependence of interlayer tunneling in strongly correlated bilayer 2D electron systems at ${\nu }_T=1$
• Deconfinement in the presence of a Fermi surface
• Mutual Composite Fermion and composite Boson approaches to balanced and imbalanced bilayer quantum Hall system: an electronic analogy of the Helium 4 system
• Tunneling at ${\nu }_T=1$ in Quantum Hall Bilayers
• Twin-field quantum key distribution with passive-decoy state
• Impurity induced bound states and proximity effect in a bilayer exciton condensate
• Dynamical slave-boson mean-field study of the Mott transition in the Hubbard model in the large-$z$ limit
• Bilayer Quantum Hall Ferromagnet in a Periodic Potential
• Ratchet-Like Solitonic Transport in Quantum Hall Bilayers
• Source-independent quantum key distribution without pre-sending entanglement