Zobrazeno 1 - 10
of 175
pro vyhledávání: '"Tanaka, Yutaro"'
Publikováno v:
Phys. Rev. B 109, 035131 (2024)
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 symmetries. We show that the NHSE inevitably occurs if a two-dimensional
Externí odkaz:
http://arxiv.org/abs/2306.08923
Autor:
Tanaka, Yutaro, Murakami, Shuichi
Publikováno v:
Phys. Rev. B 107, 245148 (2023)
We study equilibrium crystal shapes of a topological insulator (TI), a topological crystalline insulator (TCI) protected by mirror symmetry, and a second-order topological insulator (SOTI) protected by inversion symmetry. By adding magnetic fields to
Externí odkaz:
http://arxiv.org/abs/2304.08150
Publikováno v:
Phys. Rev. B 107, 115120 (2023)
We construct a general theory of $Z_2$ topological phase transitions in two-dimensional systems with time-reversal symmetry. We investigate the possibilities of $Z_2$ topological phase transitions at band inversions at all high-symmetry points in $k$
Externí odkaz:
http://arxiv.org/abs/2210.15974
Publikováno v:
Phys. Rev. Lett. 129, 046802 (2022)
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 on surface orientations. Meanwhile, discoveries of topological material
Externí odkaz:
http://arxiv.org/abs/2203.08385
Publikováno v:
Phys. Rev. B 105, 115119 (2022)
We give a bulk-hinge correspondence for higher-order topological phases protected by rotoinversion $C_{4}\mathcal{I}$ symmetry in magnetic systems. Our approach allows us to show the emergence of the chiral hinge modes only from the information of th
Externí odkaz:
http://arxiv.org/abs/2111.14371
Autor:
Asakawa, Kanta, Tanaka, Yutaro, Uemura, Kenta, Matsuzaka, Norihiro, Nishikawa, Kunihiro, Oguma, Yuki, Usui, Hiroaki, Hatakeyama, Atsushi
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 surface was observed by cooling the film from 305 to 123 K. The mean s
Externí odkaz:
http://arxiv.org/abs/2108.04487
Publikováno v:
Phys. Rev. Research 2, 043274 (2020)
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 in the HOTIs in all type-I magnetic space groups with inversion symmet
Externí odkaz:
http://arxiv.org/abs/2005.12294
Publikováno v:
Phys. Rev. Research 2, 013300 (2020)
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 $Z_2$ topological insulator. We prove it by considering a process of cutting th
Externí odkaz:
http://arxiv.org/abs/1910.08290
Publikováno v:
Phys. Rev. B 101, 115120 (2020)
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 and surfaces, but with topologically protected gapless states at the
Externí odkaz:
http://arxiv.org/abs/1910.05938
Autor:
Ramlall, Vijendra, Gisladottir, Undina, Kefeli, Jenna, Tanaka, Yutaro, May, Benjamin, Tatonetti, Nicholas
Publikováno v:
In Patterns 8 December 2023 4(12)