Effect of the intersite Coulomb interaction on chiral superconductivity at the noncollinear spin ordering

We investigate the effect of the intersite Coulomb interaction in a planar system with the triangular lattice on the structure of chiral order parameter $\Delta(\mathbf{p})$ in the phase of coexisting superconductivity and noncollinear 120$^\circ$ magnetic ordering. It has been established that the Coulomb correlations in this phase initiate the state where the quasi-momentum dependence $\Delta(\mathbf{p})$ can be presented as a superposition of the chiral invariants corresponding to the $d_{x^2-y^2}+id_{xy}$ and $p_{x}+ip_{y}$ symmetry types. It is demonstrated that the inclusion of the Coulomb interaction shifts the $\Delta(\mathbf{p})$ nodal point positions and, thereby, changes the conditions for a quantum topological transition.