Spin Logic and Emergent Spin Phenomena in 2D Materials Heterostructures

Two-dimensional (2D) materials and their van der Waals heterostructures represent a new platform to realize novel spin-based phenomena and device applications. We demonstrated robust spin interconnect, spin multiplexing, and multifunctional spin logic operation using large-area CVD graphene based spintronic devices. In order to control the spin polarization in graphene, we engineered 2D material heterostructures by combining the best of different materials in one ultimate unit and realized strong proximity induced spin-orbit coupling and magnetism. We showed that the graphene-based heterostructures are also useful for the detection of current-induced spin-polarization in topological materials and proximity interactions. Finally, room temperature spin-valve devices could be realized using van der Waals ferromagnet in heterostructures with graphene. These findings open a new platform for electrical creation and gate-control of spin polarization and provide new opportunities for all-2D heterostructure spintronic devices and integrated spin circuits.