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arxiv: 1210.0266 · v1 · pith:YF7MRPI2new · submitted 2012-10-01 · ❄️ cond-mat.mes-hall · cond-mat.str-el· cond-mat.supr-con

Particle-Hole Symmetry Protected Zero Modes on Vacancies in the Topological Insulators and Topological Superconductors on the Honeycomb Lattice

classification ❄️ cond-mat.mes-hall cond-mat.str-elcond-mat.supr-con
keywords topologicalzerolatticemodesparticle-holesymmetryhoneycombinsulators
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In this paper we study the quantum properties of the lattice vacancy in topological band insulators (TBIs) and topological superconductors (TSCs) on honeycomb lattice with particle-hole symmetry. Each vacancy has one zero mode for the Haldane model and two zero modes for the Kane-Mele model. In addition, in TSCs on honeycomb lattice with particle-hole symmetry, we found the existence of the Majorana zero modes around the vacancies. These zero energy modes are protected by particle-hole symmetry of these topological sates.

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