Dataset: Persistent spin texture protected by the approximate symmetry in weakly interacting graphene/WTe2 heterostructure

This relationship, often referred to as spin texture, influences both charge-to-spin conversion and spin relaxation, making it one of the essential characteristics for spin-orbit-driven phenomena. Materials with strong spin-orbit coupling and broken inversion symmetry can host persistent spin textures (PSTs) - unidirectional spin configurations in momentum space, supporting efficient charge-to-spin conversion and extended spin lifetimes.

Monolayer WTe2, a topological material crystallizing in a rectangular lattice, is a notable example; its symmetry enforces a canted PST enabling quantum spin Hall effect with the nontrivial spin orientation. Here, we use first-principles calculations to explore how these properties are modified when WTe2 is interfaced with graphene. We find that the PST is preserved by the local symmetry present in different regions of the heterostructure, while the system develops extended electron and hole pockets, resulting in semimetallic behavior.