3 papers
cond-mat.mes-hall2020
Theory of inversion- protected topological chiral hinge states and its applications to layered antiferromagnets
Yutaro Tanaka, Ryo Takahashi, Tiantian Zhang +1
We study positions of chiral hinge states in higher-order topological insulators (HOTIs) with inversion symmetry. First, we exhaust all possible configurations of the hinge states…
cond-mat.mes-hall2019
Bulk-edge and bulk-hinge correspondence in inversion-symmetric insulators
Ryo Takahashi, Yutaro Tanaka, Shuichi Murakami
We show that a slab of a three-dimensional inversion-symmetric higher-order topological insulator (HOTI) in class A is a 2D Chern insulator, and that in class AII is a 2D top…
cond-mat.mes-hall2019
Appearance of hinge states in second-order topological insulators via the cutting procedure
Yutaro Tanaka, Ryo Takahashi, Shuichi Murakami
In recent years, second-order topological insulators have been proposed as a new class of topological insulators. Second-order topological insulators are materials with gapped bulk…