Onset of Interlayer Phase Coherence in a Bilayer Two-Dimensional Electron System: Effect of Layer Density Imbalance

Abstract

Tunneling and Coulomb drag are sensitive probes of spontaneous interlayer phase coherence in bilayer two-dimensional electron systems at total Landau level filling factor ${\nu }_T=1$. We find that the phase boundary between the interlayer phase coherent state and the weakly-coupled compressible phase moves to larger layer separations as the electron density distribution in the bilayer is imbalanced. The critical layer separation increases quadratically with layer density difference.

4 pages, 3 figures

References in corpus (13)

• Evidence for a Goldstone Mode in a Double Layer Quantum Hall System
• 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
• Observation of a Linearly Dispersing Collective Mode in a Quantum Hall Ferromagnet
• Observation of Quantized Hall Drag in a Strongly Correlated Bilayer Electron System
• Phase Transition in ν=2 Bilayer Quantum Hall State
• Bi-layer Paired Quantum Hall States and Coulomb Drag
• Strong enhancement of drag and dissipation at the weak- to strong- coupling phase transition in a bi-layer system at a total Landau level filling nu=1
• Role of density imbalance in an interacting bilayer hole system
• Bias-voltage induced phase-transition in bilayer quantum Hall ferromagnets
• Hybridization of electron subbands in a double quantum well at quantizing magnetic field
• Hall Drag in Correlated Double Layer Quantum Hall Systems
• Nondissipative Drag Conductance as a Topological Quantum Number

Cited by in corpus (37)

• Coulomb drag
• Excitonic condensation of massless fermions in graphene bilayers
• Activated Transport in the individual Layers that form the ${\nu }_T$=1 Exciton Condensate
• Critical tunneling currents in the regime of bilayer excitons
• Trial Wavefunctions for ν= 1/2 + 1/2 Quantum Hall Bilayers
• Spin Transition in Strongly Correlated Bilayer Two Dimensional Electron Systems
• Exciton condensate at a total filling factor of 1 in Corbino 2D electron bilayers
• Evidence for a finite temperature phase transition in a bilayer quantum Hall system
• Charge Imbalance and Bilayer 2D Electron Systems at ${\nu }_T=1$
• Quantum Hall Superfluids in Topological Insulator Thin Films
• Dominant parameters for the critical tunneling current in bilayer exciton condensates
• Fractional quantum Hall effects in bilayers in the presence of inter-layer tunneling and charge imbalance
• Excitonic Superfluid to pseudo-spin density wave transition in bilayer quantum Hall systems
• Quantitative description of Josephson-like tunneling in ${\nu }_T=1$ quantum Hall bilayers
• Critical Tunneling Currents in Quantum Hall Superfluids: Pseudospin-Transfer Torque Theory
• Resistance due to vortex motion in the $\nu =1$ bilayer quantum Hall superfluid
• Precursors to Exciton Condensation in Quantum Hall Bilayers
• Fractional charges and quantum phase transitions in imbalanced bilayer quantum Hall systems
• $s$-wave paired composite-fermion electron-hole trial state for quantum Hall bilayers with $\nu =1$
• Angular magnetoresistance oscillations in bilayers in tilted magnetic fields
• Evolution of the bilayer nu = 1 quantum Hall state under charge imbalance
• Josephson vortex motion as a source for dissipation of superflow of e-h pairs in bilayers
• Pseudospin vortex-antivortex states with interwoven spin textures in double layer quantum Hall systems
• Theory of Activated Transport in Bilayer Quantum Hall Systems
• Unequal Layer Densities in Bilayer Wigner Crystal at High Magnetic Field
• Quantum disordering of the 111 state and the compressible-incompressible transition in quantum Hall bilayer systems
• Pairing transition in a double layer with interlayer Coulomb repulsion
• Critical currents and giant non-dissipative drag for superfluid electron-hole pairs in quantum Hall multilayers
• Clausius-Clapeyron Relations For First Order Phase Transitions In Bilayer Quantum Hall Systems
• Impurity induced bound states and proximity effect in a bilayer exciton condensate
• Pairing of Composite-Electrons and Composite-Holes in ${\nu }_T=1$ Quantum Hall Bilayers
• Stationary waves in a superfluid exciton gas in quantum Hall bilayers
• Transport properties of ν=1 quantum Hall bilayers. Phenomenological description
• Electron spin polarization by isospin ordering in correlated two-layer quantum Hall systems
• Strong interlayer charge transfer due to exciton condensation in an electrically-isolated GaAs quantum well bilayer
• Electron-hole pairing in topological insulator heterostructures in the quantum Hall state
• Density dependence of the excitation gaps in an undoped Si/SiGe double-quantum-well heterostructure