Proximity spin interactions in 2D magnetic vdW (hetero)multilayers

Principal investigator

Jaroslav Fabian, University of Regensburg, jaroslav.fabian (at) ur.de [webpage]

teaser picture

Abstract

Motivated by the impressive recent experimental progress in exploring proximity spin interactions in van der Waals heterostructures by spin transport, charge-spin conversion, mesoscopic transport, and effects on strongly correlated phases in twisted and untwisted graphene multi-layers, we propose to perform systematic and comprehensive first-principles calculations and phenomenological modelling of proximity spin interactions in large-scale supercells comprising graphene, transition-metal dichalcogenides and magnetic monolayers, as well as mixed-lattice structures comprising hexagonal and rectangular lattices, and effects of the proximity exchange in magnetization dynamics in van der Waal heterostructures.

We employ density functional methods, multi-orbital tight-binding modelling, and symmetry-based effective Hamiltonians to describe the electronic states of 2D heterostructures. For the modelling, we also extract desired tight-binding parameters using symmetrized wannierization. We will also develop supervised learning tools to investigate large-scale patterns of proximity spin exchange.