Numbers of donors and acceptors from transport measurements in graphene

D. S. Novikov

Published 2007-07-07Version 1

A method is suggested to separately determine the surface density of positively and negatively charged impurities that limit the mobility in a graphene monolayer. The method is based on the exact result for the transport cross-section, according to which the massless carriers are scattered more strongly when they are attracted to a charged impurity than when they are repelled from it.