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20 April 2024

» arxiv » 0909.1220

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Quantum Resistance Standard Based on Epitaxial Graphene
Alexander Tzalenchuk ; Samuel Lara-Avila ; Alexei Kalaboukhov ; Sara Paolillo ; Mikael Syväjärvi ; Rositza Yakimova ; Olga Kazakova ; T.J.B.M. Janssen ; Vladimir Fal'ko ; Sergey Kubatkin ;
Date:	7 Sep 2009
Abstract:	We report development of a quantum Hall resistance standard accurate to a few parts in a billion at 300 mK and based on large area epitaxial graphene. The remarkable precision constitutes an improvement of four orders of magnitude over the best results obtained in exfoliated graphene and is similar to the accuracy achieved in well-established semiconductor standards. Unlike the traditional resistance standards the novel graphene device is still accurately quantized at 4.2 K, vastly simplifying practical metrology. This breakthrough was made possible by exceptional graphene quality achieved with scalable silicon carbide technology on a wafer scale and shows great promise for future large scale applications in electronics.
Source:	arXiv, 0909.1220
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