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Topological Dirac nodal lines and surface charges in fcc alkaline earth metals

In nodal-line semimetals, the gaps close along loops in k space, which are not at high-symmetry points. Typical mechanisms for the emergence of nodal lines involve mirror symmetry and the π Berry phase. Here we show via ab initio calculations that fcc calcium (Ca), strontium (Sr) and ytterbium (Yb)...

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Publicat a:Nat Commun
Autors principals: Hirayama, Motoaki, Okugawa, Ryo, Miyake, Takashi, Murakami, Shuichi
Format: Artigo
Idioma:Inglês
Publicat: Nature Publishing Group 2017
Matèries:
Accés en línia:https://ncbi.nlm.nih.gov/pmc/articles/PMC5241691/
https://ncbi.nlm.nih.gov/pubmed/28074835
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1038/ncomms14022
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