Onset of interlayer phase coherence in a bilayer two-dimensional electron systems: Effect of layer density imbalance

I. B. Spielman; M. Kellogg; J. P. Eisenstein; L. N. Pfeiffer; K. W. West

doi:10.1103/PhysRevB.70.081303

Onset of interlayer phase coherence in a bilayer two-dimensional electron systems: Effect of layer density imbalance

I. B. Spielman, M. Kellogg, J. P. Eisenstein, L. N. Pfeiffer, K. W. West

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

61 Scopus citations

Abstract

Tunneling and Coulomb drag are sensitive probes of spontaneous interlayer phase coherence in bilayer two-dimensional electron systems at total Landau level filling factor ν_T=1. We find that the phase boundary between the interlayer phase coherent state and the weakly coupled compressible phase moves to larger layer separations as the electron density distribution in the bilayer is imbalanced. The critical layer separation increases quadratically with layer density difference.

Original language	English (US)
Article number	081303
Pages (from-to)	081303-1-081303-4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	70
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.70.081303
State	Published - Aug 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.70.081303

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AU - Pfeiffer, L. N.

AU - West, K. W.

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AB - Tunneling and Coulomb drag are sensitive probes of spontaneous interlayer phase coherence in bilayer two-dimensional electron systems at total Landau level filling factor νT=1. We find that the phase boundary between the interlayer phase coherent state and the weakly coupled compressible phase moves to larger layer separations as the electron density distribution in the bilayer is imbalanced. The critical layer separation increases quadratically with layer density difference.

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Onset of interlayer phase coherence in a bilayer two-dimensional electron systems: Effect of layer density imbalance

Abstract

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