121 citations · 1.2k across the 51 of their papers we have counts for
10 papers · 1 filter
Mirror skin effect and its electric circuit simulation
Tsuneya Yoshida, Tomonari Mizoguchi, Yasuhiro Hatsugai
We analyze impacts of crystalline symmetry on the non-Hermitian skin effects. Focusing on mirror symmetry, we propose a novel type of skin effects, a mirror skin effect, which resu…
Higher-order topological phases in a spring-mass model on a breathing kagome lattice
Hiromasa Wakao, Tsuneya Yoshida, Hiromu Araki +2
We propose a realization of higher-order topological phases in a spring-mass model with a breathing kagome structure. To demonstrate the existence of the higher-order topological p…
Oriented propagation of magnetization due to chiral edge modes in Kitaev-type models
Tomonari Mizoguchi, Tohru Koma, Yasuhito Yoshida
Detecting chiral edge modes in topological materials has been intensively pursued in experiments. However, the phenomena caused by the modes are not yet elucidated theoretically. W…
Flat bands and higher-order topology in polymerized triptycene: Tight-binding analysis on decorated star lattices
Tomonari Mizoguchi, Mina Maruyama, Susumu Okada +1
In a class of carbon-based materials called polymerized triptycene, which consist of triptycene molecules and phenyls, exotic electronic structures such as Dirac cones and flat ban…
Higher-Order Topological Phase in a Honeycomb-Lattice Model with Anti-Kekulé Distortion
Tomonari Mizoguchi, Hiromu Araki, Yasuhiro Hatsugai
Higher-order topological insulators have attracted considerable interests as a novel topological phase of matter, where topologically non-trivial nature of bulk protects boundary s…
Trimer classical spin liquid from interacting fractional charges
Kunio Tokushuku, Tomonari Mizoguchi, Masafumi Udagawa
We study a problem of interacting fractional charges with -- Ising model on a checkerboard lattice under magnetic field. As a result of the interplay between repulsi…
Berry Phase for Higher-Order Symmetry-Protected Topological Phases
Hiromu Araki, Tomonari Mizoguchi, Yasuhiro Hatsugai
We propose the Berry phase as a topological invariant for higher-order symmetry-protected topological (HOSPT) phases for two- and three-dimensional systems. It is to…
Molecular-orbital representation of generic flat-band models
Tomonari Mizoguchi, Yasuhiro Hatsugai
We develop a framework to describe a wide class of flat-band models, with and without a translational symmetry, by using "molecular orbitals" introduced in the prior work (HATSUGAI…
Sequential quantum phase transitions in - Heisenberg chains with integer spins (): Quantized Berry phase and valence-bond solids
Shota Fubasami, Tomonari Mizoguchi, Yasuhiro Hatsugai
On the basis of a Berry-phase analysis, we study the ground state of the - Heisenberg chain for . We find that changes of the Berry phase occur times for spi…
Symmetry-protected topological magnons in three dimensional Kitaev materials
Wonjune Choi, Tomonari Mizoguchi, Yong Baek Kim
Topological phases in magnetic materials offer novel tunability of topological properties via varying the underlying magnetism. We show that three dimensional Kitaev materials can…