Work

Effect of a High- κ Environment on Charge Carrier Mobility in Graphene

Year: 2009

Type: article

Abstract: It is widely assumed that the dominant source of scattering in graphene is charged impurities in a substrate. We have tested this conjecture by studying graphene placed on various substrates and in high-kappa media. Unexpectedly, we have found no significant changes in carrier mobility either for different substrates or by using glycerol, ethanol, and water as a top dielectric layer. This suggests that Coulomb impurities are not the scattering mechanism that limits the mean free path attainable for graphene on a substrate.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.102.206603

Authors: L. A. Ponomarenko, R. Yang, T. M. Mohiuddin, M. I. Katsnelson, K. S. Novoselov, S. V. Morozov, A. A. Zhukov, F. Schedin, E. W. Hill, A. K. Geim

Institutions: University of Manchester, Radboud University Nijmegen, Institute of Microelectronics Technology and High Purity Materials

Language: English

Topic: Graphene research and applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funder: Engineering and Physical Sciences Research Council

OpenAlex ID: W2122693364

FWCI: 22.2

Cites: 25

Cited by: 391

Related to: 10