| Datensatz noch nicht abgeschlossen | |
| Zugriffsnummer | 56355 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Implementation of a balanced quantum Hall resistor for precision measurements |
| Autor(in); Institution |
Heydolph, Peer; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Fijalkowski, Kajetan; Universität Qürzburg, Faculty for Physics and Astronomy (EP3), Würzburg, GERMANY; Institute for Topological Insulators (ITI), Würzburg, GERMANY
Gould, Charles; Universität Würzburg, Faculty for Physics and Astronomy (EP3), GERMANY; Institute for Topological Insulators, GERMANY
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| Quelle/Jahr | Conference on Precision Electromagnetic Measurements (CPEM 2026):(2026) |
| Verlag | IEEE |
| Konferenzangaben | Conference on Precision Electromagnetic Measurements (CPEM 2026), Madrid, 06-11, September, 2026, Spain |
| Freie Schlagworte | Quantum Hall effect ; breakdown current ; resistance metrology ; precision measurements ; graphene |
| Zusammenfassung | We present an advanced device design concept for a balanced quantum Hall resistor, enabling high-accuracy quantum Hall resistance measurements. The design features an anti-Hall bar structure with distinct inner and outer edges, along which two equal currents are applied to balance the electrical potentials according to a recently suggested scheme. Using the Quantum Hall Effect (QHE) in graphene as a model system, we performed high-accuracy measurements on three sample configurations. We demonstrate that implementing the principle of parallel interconnections between inner and outer edges improves the Hall resistance accuracy by three orders of magnitude from the 10 μΩ/Ω to the 10 nΩ/Ω level. By optimizing the distribution of the electrical current in the device, our results and design concepts lay the groundwork for the use of balanced quantum Hall resistors in resistance metrology. This is the first implementation of the balancing scheme in a graphene QHE device. |
| Themenbereich der Metrologie | Elektrizität und Magnetismus |
| Förderinformationen (1) |
Förderername: European Commission (EC)
Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: Metrology Partnership 2023 Fundamental Titel der Förderung: 23FUN07: QuAHMET: Quantum anomalous Hall effect materials and devices for metrology Förderungsnummer: 23FUN07 QuAHMET |
Zitierung
Heydolph, P., Patel, D. K., Yin, Y., Tschirner, T., Scherer, H., Fijalkowski, K., Gould, C., & Kruskopf, M. (2026). Implementation of a balanced quantum Hall resistor for precision measurements. Conference on Precision Electromagnetic Measurements (CPEM 2026), Madrid, 06-11, September, 2026, Spain.