Observation of giant spin-split Fermi-arc with maximal Chern number in the chiral topological semimetal PtGa

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.

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Detalles Bibliográficos
Autores principales: Mengyu Yao, Kaustuv Manna, Qun Yang, Alexander Fedorov, Vladimir Voroshnin, B. Valentin Schwarze, Jacob Hornung, S. Chattopadhyay, Zhe Sun, Satya N. Guin, Jochen Wosnitza, Horst Borrmann, Chandra Shekhar, Nitesh Kumar, Jörg Fink, Yan Sun, Claudia Felser
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2020
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Acceso en línea:https://doaj.org/article/271c4a4ca0594c2fabbb3c418f5b797d
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