Berry curvature-induced local spin polarisation in gated graphene/WTe₂ heterostructures.

ABSTRACT: Experimental control of local spin-charge interconversion is of primary interest for spintronics. Van der Waals (vdW) heterostructures combining graphene with a strongly spin-orbit coupled two-dimensional (2D) material enable such functionality by design. Electric spin valve experiments have thus far provided global information on such devices, while leaving the local interplay between symmetry breaking, charge flow across the heterointerface and aspects of topology unexplored. Here, we probe the gate-tunable local spin polarisation in current-driven graphene/WTe₂ heterostructures through magneto-optical Kerr microscopy. Even for a nominal in-plane transport, substantial out-of-plane spin accumulation is induced by a corresponding out-of-plane current flow. We present a theoreti

SUBMITTER: Powalla L 

PROVIDER: S-EPMC9174237 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature