Evidence for a Finite-Temperature Phase Transition in a Bilayer Quantum Hall System

2007/09/30 by A. R. Champagne, J. P. Eisenstein, L. N. Pfeiffer +1 · 3 citations
Materials Science · Physics and Astronomy · #Electronic and Structural Properties of Oxides #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.mes-hall #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.100.096801

4 pages and 3 postscript figures. Significantly revised version as accepted for publication in Physical Review Letters

arxiv created 2008/01/25 · openalex publication_date 2008/03/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study the Josephson-like interlayer tunneling signature of the strongly correlated nuT=1 quantum Hall phase in bilayer two-dimensional electron systems as a function of the layer separation, temperature, and interlayer charge imbalance. Our results offer strong evidence that a finite temperature phase transition separates the interlayer coherent phase from incoherent phases which lack strong interlayer correlations. The transition temperature is dependent on both the layer spacing and charge imbalance between the layers.

Citations

• Continuous Quantum Phase Transitions
• Counterflow Measurements in Strongly Correlated GaAs Hole Bilayers: Evidence for Electron-Hole Pairing
• Coexistence of Composite Bosons and Composite Fermions inν=12+12Quantum Hall Bilayers
• Quantum Ferromagnetism and Phase Transitions in Double-Layer Quantum Hall Systems
• The critical properties of the two-dimensional xy model
• Spin Transition in Strongly Correlated Bilayer Two-Dimensional Electron Systems

Cited by

• Dominant parameters for the critical tunneling current in bilayer exciton condensates
• Clausius-Clapeyron relations for first-order phase transitions in bilayer quantum Hall systems
• Evidence of a first-order quantum phase transition of excitons in electron double layers