Magnetic order of two-dimensional isotropic dipolar antiferromagnets

Magnetoelastic interaction in the two-dimensional magnetic material MnPS3 studied by first principles calculations and Raman experiments

“…Two posible energetic contributions can be proposed to explain the anisotropic order, the dipolar interactions between the magnetic moments or a single ion anisotropy arising from a non negligible spin-orbit coupling. Theoretical analysis [30][31][32][33] and recent magnon band measurements [21] suggest that the dipolar interaction would be the leading source of anisotropy responsible of the observed long-range order. While other experimental results (electron spin resonance [25,34], critical behavior [19,35], and the observation of a non negligible orbital contribution to the total magnetic moment [26,28]), support the idea that the single ion anisotropy is also playing an important role.…”

Static and dynamic critical properties of the quasi-two-dimensional antiferromagnetMnPS3

“…Theory shows that a dipole-dipole anisotropy, if strong enough, would be sufficient to induce long-ranged order in a 2D Heisenberg antiferromagnet. 11,12 Calculations using the theory estimated the dipolar anisotropy in MnPS 3 to be strong enough to create a gap in the spin-wave dispersion surface at the Brillouin zone center of 0.7 meV. 12 A Néel temperature can also be derived using the theory, which for MnPS 3 was calculated to be T N = 73 K. The presence of significant dipolar anisotropy would lift the degeneracy of the two spin-wave branches present in the antiferromagnetic phase.…”

Magnetoelastic interaction in the two-dimensional magnetic material MnPS$_3$ studied by first principles calculations and Raman experiments

“…Two posible energetic contributions can be proposed to explain the anisotropic order, the dipolar interactions between the magnetic moments or a single ion anisotropy arising from a non negligible spin-orbit coupling. Theoretical analysis [30][31][32][33] and recent magnon band measurements 21 suggest that the dipolar interaction would be the leading source of anisotropy responsible of the observed longrange order. While other experimental results (electron spin resonance 25,34 , critical behavior 20,35 , and the observation of a non negligible orbital contribution to the total magnetic moment 26,28 ), support the idea that the single ion anisotropy is also playing an important role.…”