Electrically Controllable Van Der Waals Antiferromagnetic Spin Valve

We propose a spin valve that is based on van der Waals antiferromagnetism and fully electrically controlled. The device composed of two antiferromagnetic terminals allow for vertical bias control linked central scattering potential region. magnetoresistance varies significantly when the orientations in are switched from parallel to antiparallel, because this switch induces mismatch bands same projection different parts system. It shown density-functional calculations bilayer graphene encapsulated by atomic layers ${\mathrm{Cr}}_{2}{\mathrm{Ge}}_{2}{\mathrm{Te}}_{6}$ provides material platform realize antiferromagnetism, which robust against required electric fields.