5 papers · 1 filter
Three-dimensional topological ferroelectrics
Haohao Sheng, Sheng Zhang, Zhong Fang +2
Three-dimensional (3D) topological ferroelectric (FE) insulators, in which topological and FE orders naturally coexist, enable field-controlled spintronic devices. In this work, we…
Manipulation of topological phase transitions and the mechanism of magnetic interactions in Eu-based Zintl-phase materials
Bo-Xuan Li, Ziyin Song, Zhong Fang +2
Various topological phases, including topological insulators, topological semimetals, and topological superconductors, along with the controllable topological phase transitions, ha…
Enumeration of spin-space groups: Towards a complete description of symmetries of magnetic orders
Yi Jiang, Ziyin Song, Tiannian Zhu +5
Symmetries of three-dimensional periodic scalar fields are described by 230 space groups (SGs). Symmetries of three-dimensional periodic (pseudo-) vector fields, however, are descr…
Excitonic Instability in Ta2Pd3Te5 Monolayer
Jingyu Yao, Haohao Sheng, Ruihan Zhang +7
By systematic theoretical calculations, we have revealed an excitonic insulator (EI) in the Ta2Pd3Te5 monolayer. The bulk Ta2Pd3Te5 is a van der Waals (vdW) layered compound, where…
Majorana corner modes in unconventional monolayers of the 1T-PtSe2 family
Haohao Sheng, Yue Xie, Quansheng Wu +5
In this work, we propose that Majorana zero modes can be realized at the corners of the two-dimensional unconventional insulator. We demonstrate that 1T-PtSe2 is a symmetry indicat…