Quantum Hall effect in Coulomb drag: Interlayer friction in strong magnetic fields

E. Shimshoni, SL Sondhi

Research output: Contribution to journalArticlepeer-review

Abstract

We study the Coulomb drag between two spatially separated electron systems in the quantum Hall regime. At a fixed temperature, the drag is peaked near the transitions between plateaus. The temperature dependence of the drag is a probe of the dynamics of the Hall system in a frequency and wave-vector regime inaccessible to transport measurements in a single layer. Most strikingly, in the transition regions it directly measures an exponent η, discussed by Chalker, that is characteristic of the fractal structure of the critical eigenstates.
Original languageAmerican English
Pages (from-to)11484-11487
JournalPhysical Review B (Condensed Matter and Materials Physics)
Volume49
Issue number16
StatePublished - 1994

Bibliographical note

Beckman Institute, 405 North Mathews Avenue, Urbana, Illinois 61801
Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801

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