| Zugriffsnummer | 52815 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Quantum Hall resistance standards based on epitaxial graphene with p-type conductivity |
| Übersetzungstitel | Quantum-Hall-Widerstandsnormale aus epitaktischem Graphene mit p-Leitfähigkeit |
| Autor(in); Institution | |
| Quelle/Jahr | Applied Physics Letters: 125 (2024), 6, 064001-01 - 064001-04 |
| Artikelnummer | 064001 |
| ISSN | 1077-3118 (online) ; 0003-6951 (print) |
| DOI | |
| Verlag | College Park, Md.: American Institute of Physics (AIP) |
| Freie Schlagworte | Quantum Hall resistance standards ; graphene ; p-type conductivity |
| Zusammenfassung | In the last decade, quantum resistance metrology has benefited from the application of graphene as the base material for the fabrication of quantum Hall (QH) resistance standards since it allows for the realization of the resistance unit ohm in the revised International System of Units under relaxed experimental conditions. Here, we present a detailed magnetotransport investigation of p-type epitaxial graphene, which was doped by the molecular acceptor F4-TCNQ. High-accuracy measurements of the QH resistance show an excellent quantization and a reproduction of the nominal value, the half of the von Klitzing constant R K /2, within 2 nX/X. It underlines the universality of the QH effect and shows that p-type epitaxial graphene can also serve as the basis for future resistance standards for operation at relaxed experimental con- ditions. For the p-type devices, the onset of the QH plateau is observed at about 1 T higher magnetic fields, which can be attributed to an additional disorder or a non-symmetric charge transfer mechanism in the QH regime. |
| Themenbereich der Metrologie | Elektrizität und Magnetismus |
| Forschungsprojekt | Deutsche Forschungsgemeinschaft (DFG) Project No. Pi385/3-1 within the FOR5242 research unit, DFG Germany’s Excellence Strategy–EXC-2123 QuantumFrontiers—No. 390837967. |
| Förderinformationen (1) |
Förderername: Deutsche Forschungsgemeinschaft (DFG)
Förderer ID: 0000 0001 2096 9829 Förderer ID Typ: ISNI Förderprogramm: Project No. Pi385/3-1 within the FOR5242 research unit, DFG Germany’s Excellence Strategy–EXC-2123 QuantumFrontiers Förderungsnummer: 390837967 |
Zitierung
Yin, Y., Kruskopf, M., Bauer, S., Tschirner, T., Pierz, K., Haug, R., & Schumacher, H. W. (2024). Quantum Hall resistance standards based on epitaxial graphene with p-type conductivity. Applied Physics Letters, 125(6), 064001-01–064001-04. https://doi.org/10.1063/5.0223723