Interlayer Coherence in the $\nu =1$ and $\nu =2$ Bilayer Quantum Hall States

Abstract

We have measured the Hall-plateau width and the activation energy of the bilayer quantum Hall (BLQH) states at the Landau-level filling factor $\nu =1$ and 2 by tilting the sample and simultaneously changing the electron density in each quantum well. The phase transition between the commensurate and incommensurate states are confirmed at $\nu =1$ and discovered at $\nu =2$. In particular, three different $\nu =2$ BLQH states are identified; the compound state, the coherent commensurate state, and the coherent incommensurate state.

4 pages including 5 figures

References in corpus (8)

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• Quantum Ferromagnetism and Phase Transitions in Double-Layer Quantum Hall Systems
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• Spin-Pseudospin Coherence and CP${}^3$ Skyrmions in Bilayer Quantum Hall Ferromagnets
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• Improved Composite-Boson Theory of Monolayer and Bilayer Quantum Hall Ferromagnets

Cited by in corpus (15)

• Ground-State Structure in $\nu =2$ Bilayer Quantum Hall Systems
• Magnetotransport Study of the Canted Antiferromagnetic Phase in Bilayer $\nu =2$ Quantum Hall State
• Collective modes of CP(3) Skyrmion crystals in quantum Hall ferromagnets
• Pseudospin vortex-antivortex states with interwoven spin textures in double layer quantum Hall systems
• Grassmannian Fields and Doubly Enhanced Skyrmions in Bilayer Quantum Hall system at $\nu =2$
• Doubly Enhanced Skyrmions in $\nu =2$ Bilayer Quantum Hall States
• Separately contacted edge states at high imbalance in the integer and fractional quantum Hall effect regime
• Rippled state of double-layer quantum Hall systems
• The Study of Goldstone Modes in $\nu$=2 Bilayer Quantum Hall Systems
• Interlayer coherence and entanglement in bilayer quantum Hall states at filling factor $\nu =2/\lambda$
• Effect of in-plane magnetic field on magnetic phase transitions in nu=2 bilayer quantum Hall systems
• Skyrmion $\leftrightarrow$ pseudoSkyrmion Transition in Bilayer Quantum Hall States at $\nu =1$
• PseudoSkyrmion Effects on Tunneling Conductivity in Coherent Bilayer Quantum Hall States at $\nu =1$
• Finite-temperature phase transitions in $\nu =2$ bilayer quantum Hall systems
• SU(4) Coherent Effects to the Canted Antiferromagnetic Phase in Bilayer Quantum Hall Systems at $\nu$=2