Observation of an Interedge Magnetoplasmon Mode in a Degenerate Two-Dimensional Electron Gas

2004/07/07 by G. Sukhodub, F. Hohls, R. J. Haug
Engineering · Physics and Astronomy · #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #Semiconductor materials and devices #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevlett.93.196801

published as Phys. Rev. Lett., vol. 93, p. 196801 (2004) · 4 pages, 4 figures, submitted

arxiv created 2004/07/07 · openalex publication_date 2004/11/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study the propagation of edge magnetoplasmons by time-resolved current measurements in a sample which allows for selective detection of edge states in the quantum Hall regime. At filling factors close to nu=3 we observe two decoupled modes of edge excitations, one of which is related to the innermost compressible strip and is identified as an interedge magnetoplasmon mode. From the analysis of the propagation velocities of each mode the internal spatial parameters of the edge structure are derived.

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