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Detection of magnetic gap in the topological surface states of MnBi2Te4
Haoran Ji, Yanzhao Liu, He Wang +6
Recently, intrinsic antiferromagnetic topological insulator MnBi2Te4 has drawn intense research interest and leads to plenty of significant progress in physics and materials scienc…
Structural Disorder Induced Second-order Topological Insulators in Three Dimensions
Jiong-Hao Wang, Yan-Bin Yang, Ning Dai +1
Higher-order topological insulators are established as topological crystalline insulators protected by crystalline symmetries. One celebrated example is the second-order topologica…
Intrinsic magnetic topological insulators
Pinyuan Wang, Jun Ge, Jiaheng Li +3
Introducing magnetism into topological insulators breaks time-reversal symmetry, and the magnetic exchange interaction can open a gap in the otherwise gapless topological surface s…
Ubiquitous topological states of phonons in solids: Silicon as a model material
Yizhou Liu, Nianlong Zou, Sibo Zhao +3
Research on topological physics of phonons has attracted enormous interest but demands appropriate model materials. Our {\it ab initio} calculations identify silicon as an ideal ca…
Higher-order Topological Anderson Insulators
Yan-Bin Yang, Kai Li, L. -M. Duan +1
We study disorder effects in a two-dimensional system with chiral symmetry and find that disorder can induce a quadrupole topological insulating phase (a higher-order topological p…
Hidden Physical Effects in Non-centrosymmetric Crystals
Zuzhang Lin, Chong Wang, Yong Xu +1
Symmetry forbidden effects in crystals may emerge in a local environment that breaks the symmetries. Yet these hidden physical effects were only discussed in centrosymmetric crysta…