Topological Defects and Goldstone Excitations in Domain Walls between Ferromagnetic Quantum Hall Liquids

Vladimir I. Fal'ko, S. V. Iordanskii

    Research output: Contribution to journalArticlepeer-review

    Abstract

    It is shown that the low-energy spectrum of a ferromagnetic quantum Hall liquid in a system with a multidomain structure generated by an inhomogeneous bare Zeeman splitting εZ is formed by excitations localized at the walls between domains. For a steplike εZ(r), the domain wall spectrum includes a spin wave with a linear dispersion and a small gap due to spin-orbit coupling and low-energy topological defects. The latter are charged and may dominate the transport under conditions that allow percolation through the network of domain walls.

    Original languageEnglish
    Pages (from-to)402-405
    Number of pages4
    JournalPhysical Review Letters
    Volume82
    Issue number2
    Publication statusPublished - 11 Jan 1999

    Research Beacons, Institutes and Platforms

    • National Graphene Institute

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