Graphene, universality of the quantum Hall effect and redefinition of the SI system

T. J B M Janssen; N. E. Fletcher; R. Goebel; J. M. Williams; A. Tzalenchuk; R. Yakimova; S. Kubatkin; S. Lara-Avila; V. I. Falko

doi:10.1088/1367-2630/13/9/093026

Graphene, universality of the quantum Hall effect and redefinition of the SI system

T. J B M Janssen, N. E. Fletcher, R. Goebel, J. M. Williams, A. Tzalenchuk, R. Yakimova, S. Kubatkin, S. Lara-Avila, V. I. Falko

Research output: Contribution to journal › Article › peer-review

Abstract

The Systéme Internationale d'unités (SI) is about to undergo its biggest change in half a century by redefining the units for mass and current in terms of the fundamental constants h of and e, respectively. This change crucially relies on the exactness of the relationships that link these constants to measurable quantities. Here we report the first direct comparison of the integer quantum Hall effect (QHE) in epitaxial graphene with that in GaAs/AlGaAs heterostructures. We find no difference in the quantized resistance value within the relative standard uncertainty of our measurement of 8.6×10^?11, this being the most stringent test of the universality of the QHE in terms material independence.

Original language	English
Article number	093026
Journal	New Journal of Physics
Volume	13
DOIs	https://doi.org/10.1088/1367-2630/13/9/093026
Publication status	Published - Sept 2011

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abstract = "The Syst{\'e}me Internationale d'unit{\'e}s (SI) is about to undergo its biggest change in half a century by redefining the units for mass and current in terms of the fundamental constants h of and e, respectively. This change crucially relies on the exactness of the relationships that link these constants to measurable quantities. Here we report the first direct comparison of the integer quantum Hall effect (QHE) in epitaxial graphene with that in GaAs/AlGaAs heterostructures. We find no difference in the quantized resistance value within the relative standard uncertainty of our measurement of 8.6×10?11, this being the most stringent test of the universality of the QHE in terms material independence.",

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AU - Janssen, T. J B M

AU - Fletcher, N. E.

AU - Goebel, R.

AU - Williams, J. M.

AU - Tzalenchuk, A.

AU - Yakimova, R.

AU - Kubatkin, S.

AU - Lara-Avila, S.

AU - Falko, V. I.

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Graphene, universality of the quantum Hall effect and redefinition of the SI system

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