Direct Observation of Dirac Cone in Multilayer Silicene Intercalation Compound CaSi 2 | Zendy

Noguchi Eiichi | Zendy; Sugawara Katsuaki | Zendy; Yaokawa Ritsuko | Zendy; Hitosugi Taro | Zendy; Nakano Hideyuki | Zendy; Takahashi Takashi | Zendy

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Direct Observation of Dirac Cone in Multilayer Silicene Intercalation Compound CaSi 2

Author(s) -

Noguchi Eiichi,

Sugawara Katsuaki,

Yaokawa Ritsuko,

Hitosugi Taro,

Nakano Hideyuki,

Takahashi Takashi

Publication year - 2015

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.201403077

Subject(s) - silicene , graphene , materials science , intercalation (chemistry) , dirac (video compression format) , massless particle , fermi level , condensed matter physics , electron , nanotechnology , physics , quantum mechanics , neutrino

Calcium‐intercalated multilayer silicene CaSi 2 exhibits a massless Dirac‐cone π ‐electron‐band dispersion like graphene, while the Dirac point is about 2 eV away from the Fermi level due to diiimide‐based charge transfer from the Ca atoms to the silicene layers. This indicates that the graphene‐like electronic structure with a massless Dirac cone is stably formed in the metal‐intercalated multilayer silicene.

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