Origin and regulation of triaxial magnetic anisotropy in the ferromagnetic semiconductor CrSBr monolayer

Abstract

Magnetic anisotropy plays a vital role in stabilizing the long-range magnetic order of two-dimensional ferromagnetic systems. In this work, by using first-principles method, we systematically explored the triaxial magnetic anisotropic...

A novel two-dimensional NiCl2O8 lattice with negative Poisson's ratio and magnetic modulation

“…Due to magnetic dipole interactions 43 and spin–orbit coupling (SOC), different crystallographic orientations in ferromagnets have different magnetic properties. Here, we calculated the magnetic anisotropy (MAE) of the monolayer NiCl 2 O 8 lattice, determining the relative stability of magnetization orientations in various planes ([010], [100], and [110] in-plane, and [001] and [111] out-of-plane) as summarized in Table 1.…”

Toward intrinsic ultra-high-temperature ferromagnetism in a CrAuTe2/graphene heterosystem

“…The shape-MAE is positively correlated with the local magnetic moment of the FM material, and negatively correlated with the displacement vector of the magnetic sites. Specifically, for ferromagnetic materials with magnetic moments distributed parallel in different directions, the shape energy can be expressed as: 7,34 where μ 0 is the permeability of a vacuum, q is the atomic coordinates, and M represents the magnetic moment.…”

“…19,20 For example, the T C values of FM metal monolayers ScCl and MnB were predicted to be 185 K and 345 K, respectively. 7,21 The T C of half-metal monolayer MnP is about 495 K. 19 That observed for the metallic monolayer Fe 3 GeTe 2 is about 130 K. 22 Therefore, one may be aware that FM metals usually have a high T C . However, element substitution is an effective way to design new materials, and usually results in novel properties.…”

“…5,6 However, what troubles us is that the low Curie temperatures ( T C ) (about 45 K for monolayer CrI 3 and 30 K for bilayer Cr 2 Ge 2 Te 2 ) are well below room temperature, which greatly hinders their practical application in spintronics. Although some control methods have been used for improving their magnetic performance, such as carrier doping, 7–10 strain engineering, 11–14 and constructing heterostructures, 15–17 it is still our top priority to search for and design some FM materials with high T C values, due to the rarity of intrinsic FM materials. 18…”

Ultralow thermal conductivity and anharmonic rattling in two-dimensional CrSX (X = Cl, Br, I) monolayers

“…22 Since the experimental synthesis of graphene, 2D semiconductors have been the focus of thermoelectric research due to their significant phonon scattering and superior electron transport. [23][24][25][26][27] Jinlan Wang's group predicted that the CrSX (X = Cl, Br, I) monolayers are ferromagnetic semiconductors with a moderate band gap, a flat phonon dispersion curve, and superior carrier mobility. 28 These superior properties have piqued our interest in studying the thermoelectric properties of CrSX monolayers.…”