Correction to “Interminiband Optical Transitions in Graphene Lateral Superlattices”

We have discovered an error in the numerical code used to compute the absorption and gain spectra presented in our original publication. All the qualitative conclusions made in the article regarding the terahertz optical properties of graphene lateral superlattices (SLs) and their potential device applications remain valid; however, the magnitudes of the predicted effects are weaker. In the following, we include the corrected versions of all the affected figures of the original article and of the Supporting Information document. Related comments from the article discussing the magnitude of parameters extracted from these figures are also updated. All the equations and theoretical models presented in the original publication, as well as the miniband structure calculations, are correct. Sharp terahertz absorption peaks centered at the frequency of the graphene-SL minigap under study [the local minigap between minibands V3 and V2 near the X point of the miniBrillouin zone (MBZ)] are again observed in the corrected version of Figure 2. The peak single-pass absorbance 1 − e−α computed from these absorption-coefficient spectra is 26% at 5 K and 6% at room temperature. These values remain significantly larger than the interband absorbance of undoped plain graphene (2.3%) and the free-carrier absorbance at the same frequency and carrier density (0.6%).