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Observation of quantized Hall drag in a strongly correlated bilayer electron system
M Kellogg1, I B Spielman, J P Eisenstein
1California Institute of Technology, Pasadena, California 91125, USA.
Physical Review Letters
|March 23, 2002
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 nu(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).