"Electronic confinement and coherence in patterned epitaxial graphene," by Claire Berger and 12 others, Science, 312(5777): 1191-6, 26 May 2006.

[Authors' affiliations: Georgia Institute of Technology, Atlanta; CNRS, Grenoble, France]

Abstract: "Ultrathin epitaxial graphite was grown on single-crystal silicon carbide by vacuum graphitization. The material can be patterned using standard nanolithography methods. The transport properties, which are closely related to those of carbon nanotubes, are dominated by the single epitaxial graphene layer at the silicon carbide interface and reveal the Dirac nature of the charge carriers. Patterned structures show quantum confinement of electrons and phase coherence lengths beyond 1 micrometer at 4 kelvin, with mobilities exceeding 2.5 square meters per volt-second. All-graphene electronically coherent devices and device architectures are envisaged."

This 2006 report from Science was cited 44 times in current journal articles indexed by Thomson Reuters during March-April 2008. During that two-month period, only one other chemistry paper published in the last two years (excluding reviews) attracted a higher number of citations. Prior to the most recent bimonthly count,
citations to the paper have accrued as follows:

January-February 2008: 31 citations
November-December 2007: 21
September-October 2007: 31
July-August 2007: 15
May-June 2007: 19
March-April 2007: 8
January-February 2007: 10
November-December 2006: 5
September-October 2006: 2
July-August 2006: 1
May-June 2006: 1

Total citations to date: 188

SOURCE: Hot Papers Database (Included with a subscription to the print newsletter Science Watch^®, available from the Research Services Group of Thomson Reuters. Packaged on a CD that is mailed with each Science Watch issue, the Hot Papers Database contains data on hundreds of highly cited papers published during the last two years. User interface permits searching by author, organization, journal, field, and more. Total citations, as well as citations accrued during successive bimonthly periods, can be assessed and graphed. An updated CD containing the most recent bimonthly data is mailed with every new issue of Science Watch, six times a year. The CD also includes an electronic version of the Science Watch issue in HTML format, for personal desktop access.