UPt3as a topological crystalline superconductor

Yasumasa Tsutsumi, Masaki Ishikawa, Takuto Kawakami, Takeshi Mizushima, Masatoshi Sato, Masanori Ichioka, Kazushige Machida

    Research output: Contribution to journalArticlepeer-review

    46 Citations (Scopus)

    Abstract

    We investigate the topological aspect of the spin-triplet f-wave superconductor UPt3through microscopic calculations of edge- and vortex-bound states based on the quasiclassical Eilenberger and Bogoliubov-de Gennes theories. It is shown that a gapless and linear dispersion exists at the edge of the ab-plane. This forms a Majorana valley, protected by the mirror chiral symmetry. We also demonstrate that, with increasing magnetic field, vortexbound quasiparticles undergo a topological phase transition from topologically trivial states in the double-core vortex to zero-energy states in the normal-core vortex. As long as the d-vector is locked into the ab-plane, the mirror symmetry holds the Majorana property of the zero-energy states, and thus UPt3preserves topological crystalline superconductivity that is robust against the crystal field and spin-orbit interaction.

    Original languageEnglish
    Article number113707
    Journaljournal of the physical society of japan
    Volume82
    Issue number11
    DOIs
    Publication statusPublished - Nov 2013

    Keywords

    • Edge state
    • Heavy-fermion material
    • Majorana ising anisotropy
    • Majorana zero mode
    • Topological crystalline superconductivity
    • UPt
    • Vortex state

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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