Many-body integer quantum Hall effect: Evidence for new phase transitions

S. Q. Murphy; J. P. Eisenstein; G. S. Boebinger; L. N. Pfeiffer; K. W. West

doi:10.1103/PhysRevLett.72.728

Many-body integer quantum Hall effect: Evidence for new phase transitions

S. Q. Murphy, J. P. Eisenstein, G. S. Boebinger, L. N. Pfeiffer, K. W. West

Research output: Contribution to journal › Article › peer-review

384 Scopus citations

Abstract

The =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.

Original language	English (US)
Pages (from-to)	728-731
Number of pages	4
Journal	Physical review letters
Volume	72
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.72.728
State	Published - 1994
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.72.728

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AU - Boebinger, G. S.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 1994

Y1 - 1994

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AB - The =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.

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JO - Physical review letters

JF - Physical review letters

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Many-body integer quantum Hall effect: Evidence for new phase transitions

Abstract

All Science Journal Classification (ASJC) codes

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