Current-induced cleaning of graphene
Open Access
- 15 October 2007
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 91 (16)
- https://doi.org/10.1063/1.2789673
Abstract
3 pages, 4 figures.-- PACS nrs.: 81.05.Uw, 81.65.Cf, 68.35.Dv, 68.43.Mn, 73.43.Fj.-- ArXiv pre-print available at: http://arxiv.org/abs/0709.0607A simple yet highly reproducible method to suppress contamination of graphene at low temperature inside the cryostat is presented. The method consists of applying a current of several milliamperes through the graphene device, which is here typically a few microns wide. This ultrahigh current density is shown to remove contamination adsorbed on the surface. This method is well suited for quantum electron transport studies of undoped graphene devices, and its utility is demonstrated here by measuring the anomalous quantum Hall effect.This work was supported by an EURYI grant and FP6-IST-021285-2.Peer revieweKeywords
This publication has 18 references indexed in Scilit:
- Detection of individual gas molecules adsorbed on grapheneNature Materials, 2007
- High-resolution scanning tunneling microscopy imaging of mesoscopic graphene sheets on an insulating surfaceProceedings of the National Academy of Sciences of the United States of America, 2007
- The rise of grapheneNature Materials, 2007
- Graphene: carbon in two dimensionsMaterials Today, 2007
- Electronic Confinement and Coherence in Patterned Epitaxial GrapheneScience, 2006
- Two-dimensional gas of massless Dirac fermions in grapheneNature, 2005
- Experimental observation of the quantum Hall effect and Berry's phase in grapheneNature, 2005
- Carbon nanotubes as nanoscale mass conveyorsNature, 2004
- Geometrical Dependence of High-Bias Current in Multiwalled Carbon NanotubesPhysical Review Letters, 2004
- Fabrication of metallic electrodes with nanometer separation by electromigrationApplied Physics Letters, 1999