Chern insulator in a hyperbolic lattice

ZR Liu, CB Hua, T Peng, B Zhou - Physical Review B, 2022 - APS
Motivated by the recent experimental realizations of hyperbolic lattices in circuit quantum
electrodynamics and the research interest in the non-Euclidean generalization of topological …

Four-dimensional topological Anderson insulator with an emergent second Chern number

R Chen, XX Yi, B Zhou - Physical Review B, 2023 - APS
Four-dimensional (4D) topological insulators, which are impossible in real materials, have
attracted much attention by virtue of the recent progress achieved in quantum simulations of …

Finite-size effects in non-Hermitian topological systems

R Chen, CZ Chen, B Zhou, DH Xu - Physical Review B, 2019 - APS
We systematically investigate the finite-size effects in non-Hermitian one-dimensional Su-
Schrieffer-Heeger (SSH) and two-dimensional (2D) Chern insulator models. In the Hermitian …

Higher-order topological Anderson insulators in quasicrystals

T Peng, CB Hua, R Chen, ZR Liu, DH Xu, B Zhou - Physical Review B, 2021 - APS
The disorder effects on higher-order topological phases in periodic systems have attracted
much attention. However, in aperiodic systems, such as quasicrystalline systems, the …

Using nonlocal surface transport to identify the axion insulator

R Chen, S Li, HP Sun, Q Liu, Y Zhao, HZ Lu, XC Xie - Physical Review B, 2021 - APS
The axion is a hypothetical but experimentally undetected particle. Recently, the
antiferromagnetic topological insulator Mn Bi 2 Te 4 was predicted to host the axion …

Size-dependent grain-boundary scattering in topological semimetals

NA Lanzillo, U Bajpai, I Garate, CT Chen - Physical Review Applied, 2022 - APS
We assess the viability of topological semimetals for application in advanced interconnect
technology, where conductor size is on the order of a few nanometers and grain boundaries …

Higher-order topological Anderson insulator on the Sierpiński lattice

H Chen, ZR Liu, R Chen, B Zhou - Chinese Physics B, 2023 - iopscience.iop.org
Disorder effects on topological materials in integer dimensions have been extensively
explored in recent years. However, its influence on topological systems in fractional …

Topological Anderson insulator phase in a quasicrystal lattice

R Chen, DH Xu, B Zhou - Physical Review B, 2019 - APS
Motivated by the recent experimental realization of the topological Anderson insulator and
research interest on the topological quasicrystal lattices, we investigate the effects of …

Disorder-induced Majorana zero modes in a dimerized Kitaev superconductor chain

CB Hua, R Chen, DH Xu, B Zhou - Physical Review B, 2019 - APS
Motivated by the recent experimental observation of the topological Anderson insulator in
disordered atomic wires based on the Su-Schrieffer-Heeger (SSH) model, we study disorder …

Floquet topological insulator phase in a Weyl semimetal thin film with disorder

R Chen, DH Xu, B Zhou - Physical Review B, 2018 - APS
We investigate the effects of periodic fields and disorder on topological properties of a Weyl-
semimetal thin film. The two periodic fields, ie, a periodic magnetic field and elliptically …