Many-body integer quantum Hall effect: Evidence for new phase transitions
- 31 January 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 72 (5) , 728-731
- https://doi.org/10.1103/physrevlett.72.728
Abstract
The ν=1 quantum Hall effect in bilayer 2D electron systems is shown to continuously evolve from a regime dominated by single-particle tunneling into one where interlayer Coulomb interactions stabilize the state. This many-body integer quantum Hall state exhibits a phase transition to a compressible state at large layer separation. We also find evidence for an intriguing and unexpected second transition to a new incompressible state, driven by an in-plane magnetic field. While the origin of this last result is unclear, we discuss a recent model of a pseudospin textural phase transition.Keywords
This publication has 19 references indexed in Scilit:
- Meissner effect in quantum Hall state Josephson junctionPhysical Review Letters, 1993
- Quantum Hall liquid, Josephson effect, and hierarchy in a double-layer electron systemPhysical Review B, 1993
- Tunneling in double-layered quantum Hall systemsPhysical Review B, 1993
- Neutral superfluid modes and ‘‘magnetic’’ monopoles in multilayered quantum Hall systemsPhysical Review Letters, 1992
- New fractional quantum Hall state in double-layer two-dimensional electron systemsPhysical Review Letters, 1992
- Observation of a ν=1/2 fractional quantum Hall state in a double-layer electron systemPhysical Review Letters, 1992
- Quantum Hall effect in double-quantum-well systemsPhysical Review B, 1991
- Energy spectrum of a layered system in a strong magnetic fieldPhysical Review B, 1989
- Fractional quantum Hall effect in two-layered systemsPhysical Review B, 1989
- Fractional Quantum Hall Effect at Half-Filled Landau Level in a Multiple-Layer Electron SystemPhysical Review Letters, 1987