Magnetization profile and core-level spectroscopy in a multiply quantized vortex of imbalanced Fermi superfluids

K. M. Suzuki, T. Mizushima, M. Ichioka, K. Machida

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    The core structure of multiply quantized vortices is theoretically investigated in a fermionic superfluid near Feshbach resonance. Under population imbalance in two hyperfine spin states, the vortex core is filled in by the "paramagnetic moment." Here, we find the spatial oscillation of the magnetization inside the core sensitively due to the topological structure of the pairing field, in the range from the weak-coupling regime to the unitary limit. This magnetization inside the giant core reveals the winding number of the vortex and directly results from the low-lying quasiparticle states bound inside the core. It is therefore proposed that the density profile experiment using phase contrast imaging can provide the spectroscopy of novel core level structures in giant vortices. To help understand these outcomes, we also derive an analytic solution for the low-lying quasiparticle states inside the core of a multiply quantized vortex.

    Original languageEnglish
    Article number063617
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Volume77
    Issue number6
    DOIs
    Publication statusPublished - Jun 18 2008

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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