Anisotropy-induced phase transitions in an intrinsic half-Chern insulator Ni₂I₂

Abstract

An intrinsic half-Chern insulator, possessing 100% spin-polarized edge states, is found in Ni2I2 monolayers. A combined state of a half metal and a half-Chern insulator occurs in the material under strain, associated with the unique anisotropic bands.

Quantum anomalous valley Hall effect in ferromagnetic MXenes with asymmetric functionalization

“…[16][17][18] Nevertheless, there are few 2D FM Chern insulators naturally available for spintronic applications. 6,[19][20][21] The development of valleytronics could be similar to that of spintronics. The quantum valley Hall effect, arising from spatial non-centrosymmetry, has undergone extensive investigation across various valley systems.…”

“…16–18 Nevertheless, there are few 2D FM Chern insulators naturally available for spintronic applications. 6,19–21…”