Multiplicity of solutions to Schrödinger-Poisson system with concave-convex nonlinearities

We consider the following nonlinear Schrödinger-Poisson system: −△u+V(x)u+ϕu=μg(x,u)+λf(x,u),inR3,−△ϕ=u2,inR3.Under some suitable assumptions, we prove the existence of infinitely many solutions with high energy by using Fountain theorem. Our result extends some recent work in the literature.