Phonon thermal conduction in graphene: Role of Umklapp and edge roughness scattering

D. L. Nika,1,2 E. P. Pokatilov,1,2 A. S. Askerov,2 and A. A. Balandin1,3,* 1Nano-Device Laboratory, Department of Electrical Engineering, University of California–Riverside, Riverside, California 92521, USA 2Department of Theoretical Physics, Moldova State University, Chisinau, MD-2009, Republic of Moldova 3Materials Science and Engineering Program, Bourns College of Engineering, University of California–Riverside, Riverside, California 92521, USA Received 1 December 2008; published 7 April 2009