Reflection-Symmetric Second-Order Topological Insulators and Superconductors
نویسندگان
چکیده
منابع مشابه
Reflection-Symmetric Second-Order Topological Insulators and Superconductors.
Second-order topological insulators are crystalline insulators with a gapped bulk and gapped crystalline boundaries, but with topologically protected gapless states at the intersection of two boundaries. Without further spatial symmetries, five of the ten Altland-Zirnbauer symmetry classes allow for the existence of such second-order topological insulators in two and three dimensions. We show t...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2017
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.119.246401