Magnetic Oscillations of a Fractional Hall Dot

1992/11/30 by A. H. MacDonald, Michael D. Johnson, M. D. Johnson · 2 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat

paper · pdf · doi:10.1103/physrevlett.70.3107

11 pages, IUCM-004, plain tex

arxiv created 1992/11/30 · openalex publication_date 1993/05/17 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

We show that a quantum dot in the fractional Hall regime exhibits mesoscopic magnetic oscillations with a period which is a multiple of the period for free electrons. Our calculations are performed for parabolic quantum dots with hard-core electron-electron interactions and are exact in the strong field limit for k_B T smaller than the fractional Hall gap. Explicit expressions are given for the temperature dependence of the amplitude of the oscillations.

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