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The emergence of Dirac semimetals has stimulated growing attention, owing to the considerable technological potential arising from their peculiar exotic quantum transport related to their nontrivial topological states. Especially, materials showing type‐II Dirac fermions afford novel device functionalities enabled by anisotropic optical and magnetotransport properties. Nevertheless, real technological implementation has remained elusive so far. Definitely, in most Dirac semimetals, the Dirac point lies deep below the Fermi level, limiting technological exploitation. Here, it is shown that kitkaite (NiTeSe) represents an ideal platform for type‐II Dirac fermiology based on spin‐resolved angle‐resolved photoemission spectroscopy and density functional theory. Precisely, the existence of type‐II bulk Dirac fermions is discovered in NiTeSe around the Fermi level and the presence of topological surface states with strong …
Publication date: 
27 Sep 2021

Ivana Vobornik, Anan Bari Sarkar, Libo Zhang, Danil W Boukhvalov, Barun Ghosh, Lesia Piliai, Chia‐Nung Kuo, Debashis Mondal, Jun Fujii, Chin Shan Lue, Mykhailo Vorokhta, Huaizhong Xing, Lin Wang, Amit Agarwal, Antonio Politano

Biblio References: 
Pages: 2106101
Advanced Functional Materials