Topological origin of edge states in two-dimensional inversion-symmetric insulators and semimetals
نویسندگان
چکیده
منابع مشابه
Bulk-edge correspondence for two-dimensional topological insulators
Topological insulators can be characterized alternatively in terms of bulk or edge properties. We prove the equivalence between the two descriptions for two-dimensional solids in the single-particle picture. We give a new formulation of the Z2-invariant, which allows for a bulk index not relying on a (two-dimensional) Brillouin zone. When available though, that index is shown to agree with know...
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We study the interaction between a ferromagnetically ordered medium and the surface states of a topological insulator with a general surface termination that were identified recently [F. Zhang et al. Phys. Rev. B 86, 081303(R) (2012)]. This interaction is strongly crystal face dependent and can generate chiral states along edges between crystal facets even for a uniform magnetization. While mag...
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ژورنال
عنوان ژورنال: 2D Materials
سال: 2016
ISSN: 2053-1583
DOI: 10.1088/2053-1583/4/1/015023