Numbers of donors and acceptors from transport measurements in graphene

Details Numbers of donors and acceptors from transport measurements in graphene Numbers of donors and acceptors from transport measurements in graphene

2007-07-07

arxiv.org/abs/0707.1106v1

Appl. Phys. Lett. 91, 102102 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 1 figure

Scientific paper

10.1063/1.2779107

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.

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