Electronic Confinement and Coherence in Patterned Epitaxial Graphene

by: Claire Berger, Zhimin Song, Xuebin Li, Xiaosong Wu, Nate Brown, Cecile Naud, Didier Mayou, Tianbo Li, Joanna Hass, Alexei N Marchenkov, Edward H Conrad, Phillip N First, Walt A de Heer

Science, Vol. 312, No. 5777. (26 May 2006), pp. 1191-1196.

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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. 10.1126/science.1125925

@article{citeulike:679510, 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. 10.1126/science.1125925}, author = {Berger, Claire and Song, Zhimin and Li, Xuebin and Wu, Xiaosong and Brown, Nate and Naud, Cecile and Mayou, Didier and Li, Tianbo and Hass, Joanna and Marchenkov, Alexei N. and Conrad, Edward H. and First, Phillip N. and de Heer, Walt A. }, citeulike-article-id = {679510}, doi = {http://dx.doi.org/10.1126/science.1125925}, journal = {Science}, keywords = {carbon-nanotubes, coherence, graphene, graphite, nanostructure, quantum-confinement}, month = {May}, number = {5777}, pages = {1191--1196}, posted-at = {2007-12-05 23:22:01}, priority = {2}, title = {Electronic Confinement and Coherence in Patterned Epitaxial Graphene}, url = {http://dx.doi.org/10.1126/science.1125925}, volume = {312}, year = {2006} }

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TY - JOUR ID - citeulike:679510 L3 - citeulike-article-id:679510 TI - Electronic Confinement and Coherence in Patterned Epitaxial Graphene JF - Science VL - 312 IS - 5777 SP - 1191 EP - 1196 N2 - 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. 10.1126/science.1125925 KW - carbon-nanotubes KW - coherence KW - graphene KW - graphite KW - nanostructure KW - quantum-confinement AU - Berger, Claire AU - Song, Zhimin AU - Li, Xuebin AU - Wu, Xiaosong AU - Brown, Nate AU - Naud, Cecile AU - Mayou, Didier AU - Li, Tianbo AU - Hass, Joanna AU - Marchenkov, Alexei AU - Conrad, Edward AU - First, Phillip AU - de Heer, Walt PY - 2006/05/26/ UR - http://dx.doi.org/10.1126/science.1125925 ER -

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