High-Temperature Quantum Anomalous Hall Insulators in Lithium-Decorated Iron-Based Superconductor Materials

A multiferroic vanadium phosphide monolayer with ferromagnetic half-metallicity and topological Dirac states

“…The valence band states contribute a quantum Berry phase of p for each gapped Dirac cone, so that the two Dirac cones in the whole Brillouin zone correspond to a Chern number C = 1. 39 To confirm whether the edge was protected by the topological states, we have calculated the band structure of a semi-infinite t-VP ribbon with the edge oriented along the a direction (see Fig. 1c), as shown in Fig.…”

Non-Abelian operation through scattering between chiral Dirac edge modes

“…Compared with other braiding schemes, the CDEM-based braiding inherit the favorable transport properties of the CMEMs that the braiding operation can be accomplished via its natural edge propagation other than the external manipulation. Furthermore, the experimental platforms supporting CDEMs possess desirable robustness for their larger bulk gap [45][46][47] compared with the Majorana system. The absence of the superconductivity in the CDEM-based braiding not only significantly reduce the complexity of the experimental setup, but also exclude other possible states [28][29][30] that may obstruct the non-Abelian braiding.…”

First-principles calculations of two-dimensionalmagnetic materials

“…Copyright © 2020 APS. (a) 原子结构示意图; (b) 不考虑SOC时的能带 结构; (c) Fe原子的d电子轨道序及磁交换示意图; (d) SOC产生的拓 扑能隙 Figure 5 (Color online) Atomic structure and topological properties of monolayer LiFeSe [87] . Copyright © 2020 APS.…”