34 citations · 125 across the 11 of their papers we have counts for
11 papers
Hinge modes of three-dimensional Euler insulators
Yutaro Tanaka, Shingo Kobayashi
In two-dimensional systems with space-time inversion symmetry, such as , the reality condition on wave functions gives rise to real band topology characterized by the Eule…
Hopper-Like Growth of Higher-Order Topological Insulators
Yutaro Tanaka, Shuai Zhang, Tiantian Zhang +1
Understanding crystal growth and morphology is a fundamental issue in condensed matter physics. While crystal morphology due to the distribution and dynamics of the diffusion field…
Non-Hermitian skin effect enforced by nonsymmorphic symmetries
Yutaro Tanaka, Ryo Takahashi, Ryo Okugawa
Crystal symmetries play an essential role in band structures of non-Hermitian Hamiltonian. In this paper, we propose a non-Hermitian skin effect (NHSE) enforced by nonsymmorphic sy…
Effects of first- and second-order topological phases on equilibrium crystal shapes
Yutaro Tanaka, Shuichi Murakami
We study equilibrium crystal shapes of a topological insulator (TI), a topological crystalline insulator (TCI) protected by mirror symmetry, and a second-order topological insulato…
Systematic study for two-dimensional topological phase transitions at high-symmetry points in all layer groups
Ren Sasaki, Yutaro Tanaka, Shuichi Murakami
We construct a general theory of topological phase transitions in two-dimensional systems with time-reversal symmetry. We investigate the possibilities of topological p…
Anomalous Crystal Shapes of Topological Crystalline Insulators
Yutaro Tanaka, Tiantian Zhang, Makio Uwaha +1
Understanding crystal shapes is a fundamental subject in surface science. It is now well studied how chemical bondings determine crystal shapes via dependence of surface energies o…
Rotoinversion-symmetric bulk-hinge correspondence and its applications to higher-order Weyl semimetals
Yutaro Tanaka, Ryo Takahashi, Ryo Okugawa +1
We give a bulk-hinge correspondence for higher-order topological phases protected by rotoinversion symmetry in magnetic systems. Our approach allows us to show t…
Measurement of the temperature dependence of dwell time and spin relaxation probability of Rb atoms on paraffin surfaces using a beam-scattering method
Kanta Asakawa, Yutaro Tanaka, Kenta Uemura +5
The scattering of Rb atoms on an anti-relaxation coating was studied. No significant change in the spin relaxation probability of Rb atoms by single scattering from a tetracontane…
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…
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…
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…