Spin and spin-valley Hall effects in a honeycomb lattice with antiferromagnetism and spin-orbit couplings

Publication date: Available online 8 July 2019Source: Physics Letters AAuthor(s): Jianfei Zou, Yinghan Yuan, Jing KangAbstractWe study linear response to a longitudinal electric field on an antiferromagnetic honeycomb lattice with intrinsic and Rashba spin-orbit couplings (SOCs). It is found that the spin-valley Hall effect could emerge alone or coexist with the spin Hall effect. The spin and spin-valley Hall conductivities exhibit some peculiarities that depend on the distinct topological states of the graphene lattice. Furthermore, the spin and spin-valley Hall conductivities could be remarkably modulated by changing the Fermi level. Our findings suggest that the antiferromagnetic honeycomb lattice with SOCs is an excellent platform for potential applications of spintronics and valleytronics.

Source: Physics Letters A - July 9, 2019 Category: Physics Source Type: research