Charge carrier transport in graphene field-effect transistor scaled down to submicron gate lengths

We present a preliminary study of charge carrier transport in graphene field-effect transistor with gate lengths ranging from 2 μm down to 0.2 μm applying a model of the quasi-ballistic charge carrier transport. The analysis indicates that, in particular, at the gate length of 0.2 μm the fraction of the ballistic carriers can be up to 60 %. Our finding can be used as a guidance for further development of the graphene field-effect transistors with submicron gate length for variety of the advanced and emerging applications.