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cond-mat.mtrl-sci2020
Tunable SSH model in ferromagnetic systems
Chi-Ho Cheung, Jinyu Zou
It is well known that the topology of Su-Schrieffer-Heeger(SSH) model, which belongs to AIII symmetry class, is protected by chiral symmetry. In this article, instead of chiral sym…
cond-mat.mtrl-sci2018
Inversion symmetry breaking induced triply degenerate points in orderly arranged PtSeTe family materials
R. C. Xiao, C. H. Cheung, P. L. Gong +3
paths exactly with symmetry allow to find triply degenerate points (TDPs) in band structures. The paths that host the type-II Dirac points in PtSe family materials…
cond-mat.mtrl-sci2017★ 2 cited
Inducing 3-component fermions in centrosymmetric system by breaking TRS
Chi-Ho Cheung, R. C. Xiao, Ming-Chien Hsu +3
Recent researches show that by breaking inversion symmetry Dirac fermions can split into new fermions with 3-component. In this article, we demonstrate that Dirac fermions can also…