论文类型：期刊论文
第一作者：Jinyu Zou
通讯作者：Gang Xu
合写作者：Zhuoran He
发表刊物：Physical Review B
收录刊物：SCI
学科门类：理学
一级学科：物理学
文献类型：J
卷号：100
期号：23
页面范围：235137
ISSN号：1098-0121
发表时间：2019-12-23
影响因子：3.575
摘要：We present a 4′/m′-respecting crisscross AFM model in two dimensions (2D) and three dimensions (3D), both belonging to the Z2 classification and exhibiting interesting magnetic high-order topological insulating (HOTI) phases. The topologically nontrivial phase in the 2D model is characterized by the fractional charge localized around the corners and the quantized charge quadrupole moment. Moreover, our 2D model also exhibits the quantized magnetic quadrupole moment, which is a unique feature compared with previous studies. The 3D system stacked from layers of the 2D model possesses the HOTI phase holding chiral one-dimensional (1D) metallic states on the hinge, which corresponds to the Wannier center flow between the valence and conduction bands. The novel transport properties such as the half-quantum spin-flop pumping phenomena on the side surfaces of the HOTI phase are also discussed.
发布期刊链接：https://journals.aps.org/prb/abstract/10.1103/PhysRevB.100.235137