Topological Phase of Coexisting Superconductivity and 120-Degree Magnetic Order on a Triangular Lattice

Abstract

Using the t–J–V model, self-consistent calculations of the superconducting order parameter described by a linear combination of \({d_{{x^2} - {y^2}}} + i{d_{xy}}\) and p_x + ip_y chiral invariants are performed in the phase of coexistence with 120-degree magnetic ordering. Sublattice magnetization is determined in the spin-wave approximation for the case of half-filling. A nontrivial topology of the coexistence phase is demonstrated, testifying to the possibility of obtaining edge states and Majorana modes.