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High-accuracy measurements of the quantum anomalous Hall effect for resistance metrology

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Autorschaft

  • Dinesh K. Patel
  • Mattias Kruskopf
  • Kajetan M. Fijalkowski
  • Martin Gotz

Externe Organisationen

  • Physikalisch-Technische Bundesanstalt (PTB)
  • Julius-Maximilians-Universität Würzburg

Details

OriginalspracheEnglisch
Titel des Sammelwerks2024 Conference on Precision Electromagnetic Measurements, CPEM 2024 - Proceedings
Herausgeber (Verlag)Institute of Electrical and Electronics Engineers Inc.
ISBN (elektronisch)9798350361049
PublikationsstatusVeröffentlicht - 12 Juli 2024
Extern publiziertJa
Veranstaltung2024 Conference on Precision Electromagnetic Measurements (CPEM) - Denver, USA / Vereinigte Staaten
Dauer: 8 Juli 202412 Juli 2024

Publikationsreihe

NameCPEM Digest (Conference on Precision Electromagnetic Measurements)
ISSN (Print)0589-1485

Abstract

This study explores the quantum anomalous Hall effect (QAHE) in V-doped (BiSb)2Te3, a magnetically-doped topological insulators. We use a precision resistance bridge based on a cryogenic current comparator to measure the QAHE at a zero magnetic field with unprecedented uncertainty (ΔRxy/RK ≤ 12 nΩ/Ω). Measurement results obtained at currents between 40 and 300 nA demonstrate the potential of this technology for quantum metrology, offering a path to a primary electrical resistance standard without external magnetic fields.

ASJC Scopus Sachgebiete

Zitieren

High-accuracy measurements of the quantum anomalous Hall effect for resistance metrology. / Patel, Dinesh K.; Kruskopf, Mattias; Fijalkowski, Kajetan M. et al.
2024 Conference on Precision Electromagnetic Measurements, CPEM 2024 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2024. (CPEM Digest (Conference on Precision Electromagnetic Measurements)).

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Patel, DK, Kruskopf, M, Fijalkowski, KM, Gotz, M, Pesel, E, Jaime, M, Scherer, H, Schreyeck, S, Brunner, K, Gould, C & Molenkamp, LW 2024, High-accuracy measurements of the quantum anomalous Hall effect for resistance metrology. in 2024 Conference on Precision Electromagnetic Measurements, CPEM 2024 - Proceedings. CPEM Digest (Conference on Precision Electromagnetic Measurements), Institute of Electrical and Electronics Engineers Inc., 2024 Conference on Precision Electromagnetic Measurements (CPEM), Denver, USA / Vereinigte Staaten, 8 Juli 2024. https://doi.org/10.1109/cpem61406.2024.10646071
Patel, D. K., Kruskopf, M., Fijalkowski, K. M., Gotz, M., Pesel, E., Jaime, M., Scherer, H., Schreyeck, S., Brunner, K., Gould, C., & Molenkamp, L. W. (2024). High-accuracy measurements of the quantum anomalous Hall effect for resistance metrology. In 2024 Conference on Precision Electromagnetic Measurements, CPEM 2024 - Proceedings (CPEM Digest (Conference on Precision Electromagnetic Measurements)). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/cpem61406.2024.10646071
Patel DK, Kruskopf M, Fijalkowski KM, Gotz M, Pesel E, Jaime M et al. High-accuracy measurements of the quantum anomalous Hall effect for resistance metrology. in 2024 Conference on Precision Electromagnetic Measurements, CPEM 2024 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2024. (CPEM Digest (Conference on Precision Electromagnetic Measurements)). doi: 10.1109/cpem61406.2024.10646071
Patel, Dinesh K. ; Kruskopf, Mattias ; Fijalkowski, Kajetan M. et al. / High-accuracy measurements of the quantum anomalous Hall effect for resistance metrology. 2024 Conference on Precision Electromagnetic Measurements, CPEM 2024 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2024. (CPEM Digest (Conference on Precision Electromagnetic Measurements)).
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AU - Patel, Dinesh K.

AU - Kruskopf, Mattias

AU - Fijalkowski, Kajetan M.

AU - Gotz, Martin

AU - Pesel, Eckart

AU - Jaime, Marcelo

AU - Scherer, Hansjorg

AU - Schreyeck, Steffen

AU - Brunner, Karl

AU - Gould, Charles

AU - Molenkamp, Laurens W.

N1 - Publisher Copyright: © 2024 IEEE.

PY - 2024/7/12

Y1 - 2024/7/12

N2 - This study explores the quantum anomalous Hall effect (QAHE) in V-doped (BiSb)2Te3, a magnetically-doped topological insulators. We use a precision resistance bridge based on a cryogenic current comparator to measure the QAHE at a zero magnetic field with unprecedented uncertainty (ΔRxy/RK ≤ 12 nΩ/Ω). Measurement results obtained at currents between 40 and 300 nA demonstrate the potential of this technology for quantum metrology, offering a path to a primary electrical resistance standard without external magnetic fields.

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