September 15, 2014 to October 10, 2014
Nordita, Stockholm
Europe/Stockholm timezone

Disorder in bilayer and double layer graphene

Sep 19, 2014, 11:20 AM
40m
FP41 (Nordita, Stockholm)

FP41

Nordita, Stockholm

Speaker

David Abergel

Description

We use a numerical application of Thomas-Fermi theory to describe the effects of fluctuations in the local charge density caused by charged impurities in bilayer and double layer graphene. In the bilayer, we show that the interplay between the non-linear screening of the disorder potential and a band gap causes the electron liquid to break into coexisting compressible and incompressible regions. For double layer graphene, we demonstrate that charged impurity disorder has a significant negative impact on the existence of theproposed excitonic condensate.

Presentation materials