Observation of Quantized Hall Drag in a Strongly Correlated Bilayer Electron System

Abstract

The frictional drag between parallel two-dimensional electron systems has been measured in a regime of strong interlayer correlations. When the bilayer system enters the excitonic quantized Hall state at total Landau level filling factor ν_T=1 the longitudinal component of the drag vanishes but a strong Hall component develops. The Hall drag resistance is observed to be accurately quantized at h/e^2.

4 pages, 3 figures. Version accepted for publication in Physical Review Letters. Improved discussion of experimental and theoretical issues, added references, correction to figure 3

References in corpus (2)

• Observation of a Linearly Dispersing Collective Mode in a Quantum Hall Ferromagnet
• Oscillating sign of drag in high Landau levels

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