▎ 摘　　要

We present a microscopic study on the phonon-induced inter-Landau level carrier relaxation in graphene. Our approach is based on the density matrix formalism giving access to time-resolved relaxation dynamics in graphene under Landau quantization. We find a drastically enhanced scattering via optical phonons at specific magnetic fields predicting clear still unobserved signatures in experimental differential transmission spectra. (C) 2013 AIP Publishing LLC.