Higher-order topological phases in crystalline and non-crystalline systems: a review

YB Yang, JH Wang, K Li, Y Xu - Journal of Physics: Condensed …, 2024 - iopscience.iop.org
Higher-order topological phases in crystalline and non-crystalline systems: a review Page 1
Journal of Physics: Condensed Matter ACCEPTED MANUSCRIPT • OPEN ACCESS Higher-order …

Deep learning the quantum phase transitions in random two-dimensional electron systems

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 …

Theory of spin Bott index for quantum spin Hall states in nonperiodic systems

H Huang, F Liu - Physical Review B, 2018 - APS
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 …

Photonic Topological Anderson Insulators

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 …

Phase diagrams of disordered Weyl semimetals

H Shapourian, TL Hughes - Physical Review B, 2016 - APS
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 …

K-theory and pseudospectra for topological insulators

TA Loring - Annals of Physics, 2015 - Elsevier
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 …

Aperiodic weak topological superconductors

IC Fulga, DI Pikulin, TA Loring - Physical review letters, 2016 - APS
Weak topological phases are usually described in terms of protection by the lattice
translation symmetry. Their characterization explicitly relies on periodicity since weak …

topological invariant for magnon spin Hall systems

H Kondo, Y Akagi, H Katsura - Physical Review B, 2019 - APS
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 …

Deep learning the quantum phase transitions in random electron systems: Applications to three dimensions

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 …

Non-Hermiticity and topological invariants of magnon Bogoliubov–de Gennes systems

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 …