In this paper, we investigate the following fractional Schrödinger equation with sublinear perturbation and steep potential well {(−▵)su+λV(x)u=f(x,u)+α(x)|u|ν−2uinRN,u∈Hs(RN), where 0<s<1,2s<N,λ>0,1<ν<2, f∈C(RN×R) is of subcritical growth. By using variational methods, we prove that such a class of equations possess at least two nontrivial solutions. Moreover, the phenomenon of concentration of solutions is explored as well. ©2016 Elsevier...
