title: 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 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).
authors.affiliation: California Institute of Technology, Pasadena, California 91125, USA.
authors.forename: M
authors.initials: M
authors.lastname: Kellogg
authors.forename: I B
authors.initials: IB
authors.lastname: Spielman
authors.forename: J P
authors.initials: JP
authors.lastname: Eisenstein
authors.forename: L N
authors.initials: LN
authors.lastname: Pfeiffer
authors.forename: K W
authors.initials: KW
authors.lastname: West