Covalency, correlations, and inter-layer interactions governing the magnetic and electronic structure of MnSiTe
arXiv:2303.00294 · doi:10.1103/PhysRevB.108.054419
Abstract
MnSiTe is a rare example of a layered ferrimagnet. It has recently been shown to host a colossal angular magnetoresistance as the spin orientation is rotated from the in- to out-of-plane direction, proposed to be underpinned by a topological nodal-line degeneracy in its electronic structure. Nonetheless, the origins of its ferrimagnetic structure remain controversial, while its experimental electronic structure, and the role of correlations in shaping this, are little explored to date. Here, we combine x-ray and photoemission-based spectroscopies with first-principles calculations, to probe the elemental-selective electronic structure and magnetic order in MnSiTe. Through these, we identify a marked Mn-Te hybridisation, which weakens the electronic correlations and enhances the magnetic anisotropy. We demonstrate how this strengthens the magnetic frustration in MnSiTe, which is key to stabilising its ferrimagnetic order, and find a crucial role of both exchange interactions extending beyond nearest-neighbours and anti-symmetric exchange in dictating its ordering temperature. Together, our results demonstrate a powerful methodology of using experimental electronic structure probes to constrain the parameter space for first-principles calculations of magnetic materials, and through this approach, reveal a pivotal role played by covalency in stabilising the ferrimagnetic order in MnSiTe.
References in corpus (10)
- Predicting the Spin-Lattice Order of Frustrated Systems from First-Principles
- Magnetic order and interactions in ferrimagnetic Mn3Si2Te6
- Strange electrical transport: Colossal magnetoresistance via avoiding fully polarized magnetization in ferrimagnetic insulator Mn3Si2Te6
- Microscopic origin of magnetism in monolayer transition metal dihalides
- Direct observation of the energy gain underpinning ferromagnetic superexchange in the electronic structure of CrGeTe
- Critical behavior and magnetocaloric effect in MnSiTe
- Polaronic transport and thermoelectricity in MnSiTe single crystals
- Effect of Coulomb interaction on the two-dimensional electronic structure of the van der Waals ferromagnet CrGeTe
- Enhanced Magnetization from Proton Irradiated Bulk van der Waals Magnet CrSiTe3
- Critical phenomena of the layered ferrimagnet Mn3Si2Te6 following proton irradiation
Cited by in corpus (5)
- From ferromagnetic semiconductor to anti-ferromagnetic metal in epitaxial CrTe monolayers
- Current-sensitive Hall effect in a chiral-orbital-current state
- Impact of Thermal Effects on the Current-Tunable Electrical Transport in the Ferrimagnetic Semiconductor MnSiTe
- Emergent Inductance from Chiral Orbital Currents in a Bulk Ferrimagnet
- Origin of pressure-induced anomalies in the nodal-line ferrimagnet MnSiTe