Spin and orbital transport in rare earth dichalcogenides: The case of EuS${}_2$

Abstract

We perform first-principles calculations to determine the electronic, magnetic and transport properties of rare-earth dichalcogenides taking a monolayer of the H-phase EuS${}_2$ as a representative. We predict that the H-phase of the EuS${}_2$ monolayer exhibits a half-metallic behavior upon doping with a very high magnetic moment. We find that the electronic structure of EuS${}_2$ is very sensitive to the value of Coulomb repulsion $U$, which effectively controls the degree of hybridization between Eu-$f$ and S-$p$ states. We further predict that the non-trivial electronic structure of EuS${}_2$ directly results in a pronounced anomalous Hall effect with non-trivial band topology. Moreover, while we find that the spin Hall effect closely follows the anomalous Hall effect in the system, the orbital complexity of the system results in a very large orbital Hall effect, whose properties depend very sensitively on the strength of correlations. Our findings thus promote rare-earth based dichalcogenides as a promising platform for topological spintronics and orbitronics.

9 pages, 4 figures

References in corpus (24)

• The Valley Hall Effect in MoS2 Transistors
• Wannier90 as a community code: new features and applications
• Magnetic 2D materials and heterostructures
• Study of Intrinsic Spin Hall Effect and Orbital Hall Effect in 4d- and 5d- Transition Metals
• Roadmap of spin-orbit torques
• Giant Orbital Hall Effect in Transition Metals: Origin of Large Spin and Anomalous Hall Effects
• Intrinsic spin Hall effect in monolayers of group-VI dichalcogenides: A first-principles study
• Orbitronics: Orbital Currents in Solids
• Tuning Electronic and Magnetic Properties of Early Transition Metal Dichalcogenides via Tensile Strain
• Maximally Localized Wannier Functions within the FLAPW formalism
• Theory of Current-Induced Angular Momentum Transfer Dynamics in Spin-Orbit Coupled Systems
• Disentangling orbital and valley Hall effects in bilayers of transition metal dichalcogenides
• Orbital Hall effect as an alternative to valley Hall effect in gapped graphene
• Giant Intrinsic Spin and Orbital Hall Effects in Sr2MO4 (M=Ru,Rh,Mo)
• Orbital Rashba effect in surface oxidized Cu film
• Sign-reversible valley-dependent Berry phase effects in 2D valley-half-semiconductors
• Intrinsic orbital moment and prediction of a large orbital Hall effect in the 2D transition metal dichalcogenides
• Orbital Hall Insulating Phase in Transition Metal Dichalcogenide Monolayers
• Magnetotransport of dirty-limit van Hove singularity quasiparticles
• Intrinsic orbital and spin Hall effects in monolayer transition metal dichalcogenides
• Orbital Hall effect in bilayer transition metal dichalcogenides: From the intra-atomic approximation to the Bloch states orbital magnetic moment approach
• Two-dimensional orbital Hall insulators
• Large negative magnetoresistance in the new antiferromagnetic rare-earth dichalcogenide EuTe${}_2$
• Orbital momentum Hall effect in p-doped graphane

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