T Ohtsuki, T Ohtsuki - Journal of the Physical Society of Japan, 2016 - journals.jps.jp
Random electron systems show rich phases such as Anderson insulator, diffusive metal, quantum Hall and quantum anomalous Hall insulators, Weyl semimetal, as well as …
This is a joint publication with the paper by Huang and Liu [Phys. Rev. Lett. 121, 126401 (2018) 10.1103/PhysRevLett. 121.126401]. In this work, we propose the spin Bott index to …
X Cui, RY Zhang, ZQ Zhang, CT Chan - Physical Review Letters, 2022 - APS
That disorder can induce nontrivial topology is a surprising discovery in topological physics. As a typical example, Chern topological Anderson insulators (TAIs) have been realized in …
Weyl semimetals are gapless quasitopological materials with a set of isolated nodal points forming their Fermi surface. They manifest their quasitopological character in a series of …
We derive formulas and algorithms for Kitaev's invariants in the periodic table for topological insulators and superconductors for finite disordered systems on lattices with boundaries. We …
Weak topological phases are usually described in terms of protection by the lattice translation symmetry. Their characterization explicitly relies on periodicity since weak …
We propose a definition of a Z 2 topological invariant for magnon spin Hall systems which are the bosonic analog of two-dimensional topological insulators in class AII. The existence …
T Ohtsuki, T Ohtsuki - Journal of the Physical Society of Japan, 2017 - journals.jps.jp
Three-dimensional random electron systems undergo quantum phase transitions and show rich phase diagrams. Examples of the phases are the band gap insulator, Anderson …
H Kondo, Y Akagi, H Katsura - Progress of Theoretical and …, 2020 - academic.oup.com
Since the theoretical prediction and experimental observation of the magnon thermal Hall effect, a variety of novel phenomena that may occur in magnonic systems have been …