New nonlocal magnetoresistance effect at the crossover between the classical and quantum transport regimes

A. K. Geim, P. C. Main, P. H. Beton, P. Středa, L. Eaves, C. D W Wilkinson, S. P. Beaumont

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A new type of nonlocal oscillatory magnetoresistance effect is observed in heavily doped n+-GaAs wires over a limited range of temperature (10 ≤ T ≤ 50 K) and at magnetic fields sufficiently large to give rise to Landau quantization. The effect is observed when quantum ballistic transport along the edges coexist with diffusive and dissipative conduction in the bulk.
    Original languageEnglish
    Pages (from-to)3014-3017
    Number of pages3
    JournalPhysical Review Letters
    Volume67
    Issue number21
    Publication statusPublished - 1991

    Keywords

    • edge states
    • fluctuations
    • conductors
    • resistance
    • contacts
    • wire

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