Evolution of the Bilayer ν=1 Quantum Hall State Under Charge Imbalance

Authors

W. R. Clarke, University of New South Wales
A. P. Micolich, University of New South Wales
A. R. Hamilton, University of New South Wales
M. Y. Simmons, University of New South Wales
Charles B. Hanna, Boise State UniversityFollow
J. R. Rodriguez, Boise State University
M. Pepper, Boise State University
D. A. Ritchie, University of Cambridge

Document Type

Article

Publication Date

2-10-2005

Abstract

We use high-mobility bilayer hole systems with negligible tunneling to examine how the bilayer ν=1 quantum Hall state evolves as charge is transferred from one layer to the other at constant total density. We map bilayer ν=1 state stability versus imbalance for five total densities spanning the range from strongly interlayer coherent to incoherent. We observe competition between single-layer correlations and interlayer coherence. Most significantly, we find that bilayer systems that are incoherent at balance can develop spontaneous interlayer coherence with imbalance, in agreement with recent theoretical predictions.

Publication Information

Clarke, W. R.; Micolich, A. P.; Hamilton, A. R.; Simmons, M. Y.; Hanna, Charles B.; Rodriguez, J. R.; Pepper, M.; and Ritchie, D. A.. (2005). "Evolution of the Bilayer ν=1 Quantum Hall State Under Charge Imbalance". Physical Review B, 71(8), 081304-1 - 081304-4. http://dx.doi.org/10.1103/PhysRevB.71.081304