title: Near-perfect correlation of the resistance components of mesoscopic samples at the quantum Hall regime.
abstract: We study the four-terminal resistance fluctuations of mesoscopic samples near the transition between the nu=2 and the nu=1 quantum Hall states. We observe near-perfect correlations between the fluctuations of the longitudinal and Hall components of the resistance. These correlated fluctuations appear in a magnetic-field range for which the two-terminal resistance of the samples is quantized. We discuss these findings in light of edge-state transport models of the quantum Hall effect. We also show that our results lead to an ambiguity in the determination of the width of quantum Hall transitions.
authors.affiliation: Department of Condensed Matter Physics, The Weizmann Institute of Science, Rehovot 76100, Israel.
authors.forename: E
authors.initials: E
authors.lastname: Peled
authors.forename: D
authors.initials: D
authors.lastname: Shahar
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
authors.forename: E
authors.initials: E
authors.lastname: Diez
authors.forename: D L
authors.initials: DL
authors.lastname: Sivco
authors.forename: A Y
authors.initials: AY
authors.lastname: Cho