From Graphene to Silicene: A New 2D Topological Insulator | Zendy

Motohiko Ezawa | Zendy

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From Graphene to Silicene: A New 2D Topological Insulator

Author(s) -

Motohiko Ezawa

Publication year - 2014

Publication title -

proceedings of the 12th asia pacific physics conference (appc12)

Language(s) - English

Resource type - Conference proceedings

DOI - 10.7566/jpscp.1.012003

Subject(s) - silicene , topological insulator , graphene , insulator (electricity) , topology (electrical circuits) , materials science , physics , condensed matter physics , nanotechnology , optoelectronics , electrical engineering , engineering

Silicene, silicon analogue of graphene, is a quantum spin-Hall insulator due to its spin-orbit interaction. Silicene exhibits a rich variety of topological phases by applying an external field such as electric field, photo-irradiation and exchange field. They are indexed by the Chern, spin Chern, valley Chern and spin-valley Chern numbers. We investigate gapless edge modes circulating a domain to which we apply a phase-changing external field.

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