Observation of quantized Hall drag in a strongly correlated bilayer electron system.
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).
Kellogg
M
M
California Institute of Technology, Pasadena, California 91125, USA.
Spielman
I B
IB
Eisenstein
J P
JP
Pfeiffer
L N
LN
West
K W
KW