upward

Multilayer graphene

S Fang, E Kaxiras, Electronic structure theory of weakly interacting bilayers, PRB 93, 235153 (2016)

V Perebeinos, J Tersoff, P Avouris, Phonon-Mediated Interlayer Conductance in Twisted Graphene Bilayers, PRL 109, 236604 (2012)