Magnon spin Nernst effect on the antiferromagnetic checkerboard lattice

Publication date: Available online 13 August 2019Source: Physics Letters AAuthor(s): A.S.T. PiresAbstractIn this paper we study topological effects in an anisotropic checkerboard antiferromagnetic lattice in the presence of the Dzyaloshinskii- Moriya interaction (DMI). The time reversal symmetry is broken by anisotropies in the Hamiltonian. However, in contrast to the honeycomb lattice, the DMI does not open a gap here. We calculate the energy spectrum of the magnons and the spin Nernst coefficient in the presence of a longitudinal temperature gradient.

Source: Physics Letters A - August 14, 2019 Category: Physics Source Type: research