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Showing 1–4 of 4 results
Advanced filters: Author: Satya N. Guin Clear advanced filters

  • Topological quasiparticle with higher Chern number is promising to realize large-quantized photogalvanic effect. Here, the authors observe splitting of both topological surface and bulk states in a chiral crystal PtGa, suggesting multifold fermions with a maximal Chern number of ±4.

    • Mengyu Yao
    • Kaustuv Manna
    • Claudia Felser
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-7

  • We report a high anomalous Nernst thermopower (\(S_{yx}^A\)) -value of ~6.0 µV K−1 at room temperature in the ferromagnetic topological Heusler compound Co2MnGa. The measured value is seven-times larger than any anomalous Nernst thermopower value ever reported for a conventional ferromagnet. The high anomalous Nernst effect originates from a large net Berry curvature near the Fermi level associated with nodal lines and Weyl points.

    • Satya N. Guin
    • Kaustuv Manna
    • Claudia Felser
    ResearchOpen Access
    NPG Asia Materials
    Volume: 11, P: 1-9

  • Topological boundary modes within charge-ordered states have not yet been observed experimentally. Now an in-gap boundary mode, stemming solely from the charge order, is visualized in the topological material Ta2Se8I.

    • Maksim Litskevich
    • Md Shafayat Hossain
    • M. Zahid Hasan
    Research
    Nature Physics
    Volume: 20, P: 1253-1261

  • Although novel topological quasiparticles have recently been evidenced, their electrical transport properties remain elusive. Here, the authors report ultra-low resistivity down to 6 nΩcm at 2 K in MoP with a large mean free path, which hints on the exotic properties of triple point fermions.

    • Nitesh Kumar
    • Yan Sun
    • Chandra Shekhar
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-7