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Near-Perfect Correlation of the Resistance Components of Mesoscopic Samples at the Quantum Hall Regime
E. Peled, D. Shahar, Y. Chen, E. Diez, D. L. Sivco, A. Y. Cho
Published 2003-07-17, updated 2003-12-10Version 3
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.
Comments: As published
Journal: Phys. Rev. Lett. 91, 236802 (2003)
Categories: cond-mat.mes-hall
Keywords: quantum hall regime, mesoscopic samples, near-perfect correlation, resistance components, four-terminal resistance fluctuations
Tags: journal article
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