Direct Observation of Dirac Cone in Multilayer Silicene Intercalation Compound CaSi2. (15th December 2014)

• Record Type: Journal Article
• Authors: Noguchi, Eiichi; Sugawara, Katsuaki; Yaokawa, Ritsuko; Hitosugi, Taro; Nakano, Hideyuki; Takahashi, Takashi
• Is Part Of: Advanced materials. Volume 27:Number 5(2015)
• Page Start: 856
• Page End: 860
• Publication Date: 2014-12-15
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201403077
• Languages: English
• ISSNs: 0935-9648

Abstract

<abstract abstract-type="graphical" xml:lang="en" id="adma201403077-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>Calcium‐intercalated multilayer silicene CaSi</bold> ₂ exhibits a massless Dirac‐cone <italic>π</italic>‐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. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgh3pgk72rw" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>