Spin Transition in Strongly Correlated Bilayer Two Dimensional Electron Systems

Abstract

Using a combination of heat pulse and nuclear magnetic resonance techniques we demonstrate that the phase boundary separating the interlayer phase coherent quantum Hall effect at ${\nu }_T=1$ in bilayer electron gases from the weakly coupled compressible phase depends upon the spin polarization of the nuclei in the host semiconductor crystal. Our results strongly suggest that, contrary to the usual assumption, the transition is attended by a change in the electronic spin polarization.

4 pages, 3 postscript figure

References in corpus (11)

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• 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
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Cited by in corpus (33)

• Fractional Quantum Hall Physics in Jaynes-Cummings-Hubbard Lattices
• Trial Wavefunctions for ν= 1/2 + 1/2 Quantum Hall Bilayers
• Evidence for a finite temperature phase transition in a bilayer quantum Hall system
• Charge Imbalance and Bilayer 2D Electron Systems at ${\nu }_T=1$
• Spin Transition in the Half-Filled Landau Level
• Resistively-Detected NMR in a Two-Dimensional Electron System near $\nu =1$: Clues to the Origin of the Dispersive Lineshape
• Entanglement Skyrmions in multicomponent quantum Hall systems
• Quantum Hall Exciton Condensation at Full Spin Polarization
• Interlayer coherent composite Fermi liquid phase in quantum Hall bilayers
• Quantitative description of Josephson-like tunneling in ${\nu }_T=1$ quantum Hall bilayers
• Precursors to Exciton Condensation in Quantum Hall Bilayers
• Quantum Hall ferromagnetism in graphene: a SU(4) bosonization approach
• NMR Probing Spin Excitations in the Ring-Like Structure of a Two-Subband System
• Intrinsic gap and exciton condensation in the nu_T=1 bilayer system
• Gauge Fluctuations and Interlayer Coherence in Bilayer Composite Fermion Metals
• Pseudospin vortex-antivortex states with interwoven spin textures in double layer quantum Hall systems
• Collective modes of CP(3) Skyrmion crystals in quantum Hall ferromagnets
• Finite-momentum condensate of magnetic excitons in a bilayer quantum Hall system
• Interaction and disorder in bilayer counterflow transport at filling factor one
• Current Induced Nuclear Spin Depolarization at Landau Level Filling Factor nu=1/2
• Dependence of persistent gaps at Landau level crossings on relative spin
• Probing Quantum Hall Pseudospin Ferromagnet by Resistively Detected NMR
• Spin and the Coulomb Gap in the Half-Filled Lowest Landau Level
• Quantum Hall to Insulator Transition in the Bilayer Quantum Hall Ferromagnet
• Clausius-Clapeyron Relations For First Order Phase Transitions In Bilayer Quantum Hall Systems
• Metamorphosis of a Quantum Hall Bilayer State into a Composite Fermion Metal
• Bilayer Quantum Hall Ferromagnet in a Periodic Potential
• Effect of magnetization on the tunneling anomaly in compressible quantum Hall states
• Point-like topological defects in bilayer quantum Hall systems
• Semiclassical theory of the tunneling anomaly in partially spin-polarized compressible quantum Hall states
• Stability of the Excitonic Phase in Bilayer Quantum Hall Systems at Total Filling One -- Effects of Finite Well Width and Pseudopotentials --
• Electron spin polarization by isospin ordering in correlated two-layer quantum Hall systems
• Evidence of a first-order quantum phase transition of excitons in electron double layers