SU(N) fractional quantum Hall effect in topological flat bands

We study $N$-component interacting particles (hardcore bosons and fermions) loaded in topological lattice models with $\mathrm{SU}\left(N\right)$-invariant interactions based on exact diagonalization and density matrix renormalization group method. By tuning the interplay of interspecies and intraspecies interactions, we demonstrate that a class of $\mathrm{SU}\left(N\right)$ fractional quantum Hall states can emerge at fractional filling factors $\nu =N/(N+1)$ for bosons [$\nu =N/(2N+1)$ for fermions] in the lowest Chern band, characterized by the nontrivial fractional Hall responses and the fractional charge pumping. Moreover, we establish a topological characterization based on the $\mathbf{K}$ matrix and discuss the close relationship to the fractional quantum Hall physics in topological flat bands with Chern number $N$.