Universal conductivity and dimensional crossover in multi-layer graphene
Università di Roma Tor Vergata - Viale della Ricerca Scientifica, 00133 Rome, Italy, EU
Accepted: 13 December 2011
We show, by exact Renormalization Group methods, that in multi-layer graphene the dimensional crossover energy scale is decreased by the intra-layer interaction, and that for temperatures and frequencies greater than such scale the conductivity is close to the one of a stack of independent layers up to small corrections.
PACS: 72.80.Vp – Electronic transport in graphene / 71.10.Fd – Lattice fermion models (Hubbard model, etc.) / 05.10.Cc – Renormalization group methods
© EPLA, 2012