Precision comparison of the quantum Hall effect in graphene and gallium arsenide

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

Funding Agencies|UK NMS||Swedish Research Council||Foundation for Strategic Research||EU||EPSRC|EP/G041954|Science and Innovation Award|EP/G014787|SINGLE||
The half-integer quantum Hall effect in epitaxial graphene is compared with high precision to the well-known integer effect in a GaAs/AlGaAs heterostructure. We find no difference between the quantized resistance values within the relative standard uncertainty of our measurement of 8.7 x 10(-11). The result places new tighter limits on any possible correction terms to the simple relation R-K = h/e(2), and also demonstrates that epitaxial graphene samples are suitable for application as electrical resistance standards of the highest metrological quality. We discuss the characterization of the graphene sample used in this experiment and present the details of the cryogenic current comparator bridge and associated uncertainty budget.

Williams, J MNational Phys Lab, Teddington,National Physical Laboratory (NPL) (författare)
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)
Tzalenchuk, ANational Phys Lab, Teddington,National Physical Laboratory (NPL) (författare)
Yakimova, RositsaLinköpings universitet,Halvledarmaterial,Tekniska högskolan,Linköping University(Swepub:liu)rosia15 (författare)
Lara Avila, Samuel,1983Chalmers,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)larsavil (författare)
Kubatkin, Sergey,1959Chalmers,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)kubatkin (författare)
Falko, V IUniversity of Lancaster (författare)
Fal'ko, V. I.Lancaster University (författare)
National Phys Lab, TeddingtonNational Physical Laboratory (NPL) (creator_code:org_t)

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

Om ämnet

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.