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

Janssen, T J B MNational Phys Lab, England,National Physical Laboratory (NPL) (författare)

Funding Agencies|UK National Measurement Office (NMO)||Swedish Research Council||Foundation for Strategic Research||EU||EPSRC|EP/G041954|Science & Innovation Award|EP/G014787|SINGLE||
The Systeme Internationale dunites (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 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 x 10(-11), this being the most stringent test of the universality of the QHE in terms of material independence.

Fletcher, N EBur Int Poids and Mesures,BIPM Bureau International des Poids et Mesures (författare)
Goebel, RBur Int Poids and Mesures,BIPM Bureau International des Poids et Mesures (författare)
Williams, J MNational Phys Lab, England,National Physical Laboratory (NPL) (författare)
Tzalenchuk, ANational Phys Lab, England,National Physical Laboratory (NPL) (författare)
Yakimova, RositsaLinköpings universitet,Halvledarmaterial,Tekniska högskolan,Linköping University(Swepub:liu)rosia15 (författare)
Kubatkin, Sergey,1959Chalmers,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)kubatkin (författare)
Lara Avila, Samuel,1983Chalmers,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)larsavil (författare)
Falko, V IUniversity of Lancaster (författare)
Fal'ko, V. I.Lancaster University (författare)
National Phys Lab, EnglandNational Physical Laboratory (NPL) (creator_code:org_t)

Av författaren/redakt...: Janssen, T J B M; Fletcher, N E; Goebel, R; Williams, J M; Tzalenchuk, A; Yakimova, Rosits ...; visa fler...; Kubatkin, Sergey ...; Lara Avila, Samu ...; Falko, V I; Fal'ko, V. I.; visa färre...

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