Abstract
AbstractThe remarkable gapless and linear band structure of graphene opens up new carrier relaxation channels bridging the valence and the conduction band. These Auger scattering processes change the number of charge carriers and can give rise to a significant multiplication of optically excited carriers in graphene. This is an ultrafast many‐particle phenomenon that is of great interest both for fundamental many‐particle physics as well as technological applications. Here, we review the research on carrier multiplication in graphene and Landau‐quantized graphene including theoretical modeling and experimental demonstration.Illustration of the electronic band structure of graphene including Auger scattering channels that can lead to a carrier multiplication (CM). Figure adapted from Ref. [2].
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