Magneto-Optical Spin Hall Effect Regulation at Terahertz Frequencies Based on Graphene–Gold Heterojunction

In this paper, we theoretically consider the magneto-optical spin Hall effect of light (MOSHEL) in a graphene–gold heterojunction structure at terahertz frequencies, and determine maximum value transverse shift (SHEL) designed by varying frequency, thickness metal layer, Fermi energy level graphene, magnetic induction density. When frequency was 1.2 THz, layer 50 nm, 0.2 eV, density B 10 T, SHEL shifts left-handed circularly polarized (LHCP) right-handed (RHCP) components greatest critical angle (58°), with as 498μm, 1000 times larger than visible light. At point, graphene exhibited significant effect, dramatically enhancing splitting extrema LHCP RHCP. This will provide possibilities for enhancement efficient regulation optical within range.