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First principle calculation of the effective Zeeman's couplings in topological materials
Zhi-Da Song, Song Sun, Yuan-Feng Xu +4
In this paper, we propose a first principle calculation method for the effective Zeeman's coupling based on the second perturbation theory and apply it to a few topological materia…
Two-Dimensional Oxide Topological Insulator With Iron-Pnictide Superconductor LiFeAs Structure
Qiunan Xu, Zhida Song, Simin Nie +3
By using first-principles calculations, we propose that ZrSiO can be looked as a three-dimensional (3D) oxide weak topological insulator (TI) and its single layer is a long-sought-…
Quantum Spin Hall State on Square-like Lattice
Zhida Song, S. M. Nie, Hongming Weng +1
We find that quantum spin Hall (QSH) state can be obtained on a square-like or rectangular lattice, which is generalized from two-dimensional (2D) transition metal dichalcogenide (…
Large-Gap Two-Dimensional Topological Insulator in Oxygen Functionalized MXene
Hongming Weng, Ahmad Ranjbar, Yunye Liang +7
Two-dimensional (2D) topological insulator (TI) have been recognized as a new class of quantum state of matter. They are distinguished from normal 2D insulators with their nontrivi…
Quantum Spin Hall Effect in 2D Transition Metal Dichalcogenide Haeckelites
S. M. Nie, Zhida Song, Hongming Weng +1
By using first-principles calculation, we have found that a family of 2D transition metal dichalcogenide haeckelites with square-octagonal lattice -4-8 (=Mo, W and =S,…