Details
| Original language | English |
|---|---|
| Article number | 1502206 |
| Pages (from-to) | 1-6 |
| Journal | IEEE Transactions on Instrumentation and Measurement |
| Volume | 72 |
| Publication status | Published - 2023 |
Abstract
For more than three decades, GaAs/AlGaAs quantum Hall (QH) devices are being used as standards for the realization of the dc resistance unit ohm. Recently, the outstanding performance of graphene-based QH resistance (QHR) devices signifies an immense potential for a transition from GaAs to graphene-based devices in the field of resistance and also impedance metrology, with equally good accuracy. The recent developments in epitaxial graphene (EG) quality and fabrication of EG-based doped QHR devices and their improved performance tested in several national metrology institutes (NMIs) all over the world have demonstrated a more user-friendly dissemination of the unit ohm since they can be operated at relatively low magnetic fields and higher temperatures in comparison to existing GaAs-based devices. In this work, we have extensively tested the temporal stability of the magneto-transport properties of our graphene QH devices fabricated in the Physikalisch-Technische Bundesanstalt (PTB) and the resistance quantization performance by means of repeated high-accuracy cryogenic current comparator (CCC) measurements with several devices. Together with interlaboratory comparisons between NMIs, the performance and stability assessment demonstrate the readiness of the technology for calibration purposes in resistance metrology.
Keywords
- CCC, epitaxial graphene (EG), metrology, quantum Hall (QH) effect, resistance standards
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Instrumentation
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Transactions on Instrumentation and Measurement, Vol. 72, 1502206, 2023, p. 1-6.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Performance and Stability Assessment of Graphene-Based Quantum Hall Devices for Resistance Metrology
AU - Chatterjee, Atasi
AU - Kruskopf, Mattias
AU - Götz, Martin
AU - Yin, Yefei
AU - Pesel, Eckart
AU - Gournay, Pierre
AU - Rolland, Benjamin
AU - Kučera, Jan
AU - Bauer, Stephan
AU - Pierz, Klaus
AU - Schumacher, Bernhard
AU - Scherer, Hansjörg
N1 - Publisher Copyright: © 1963-2012 IEEE.
PY - 2023
Y1 - 2023
N2 - For more than three decades, GaAs/AlGaAs quantum Hall (QH) devices are being used as standards for the realization of the dc resistance unit ohm. Recently, the outstanding performance of graphene-based QH resistance (QHR) devices signifies an immense potential for a transition from GaAs to graphene-based devices in the field of resistance and also impedance metrology, with equally good accuracy. The recent developments in epitaxial graphene (EG) quality and fabrication of EG-based doped QHR devices and their improved performance tested in several national metrology institutes (NMIs) all over the world have demonstrated a more user-friendly dissemination of the unit ohm since they can be operated at relatively low magnetic fields and higher temperatures in comparison to existing GaAs-based devices. In this work, we have extensively tested the temporal stability of the magneto-transport properties of our graphene QH devices fabricated in the Physikalisch-Technische Bundesanstalt (PTB) and the resistance quantization performance by means of repeated high-accuracy cryogenic current comparator (CCC) measurements with several devices. Together with interlaboratory comparisons between NMIs, the performance and stability assessment demonstrate the readiness of the technology for calibration purposes in resistance metrology.
AB - For more than three decades, GaAs/AlGaAs quantum Hall (QH) devices are being used as standards for the realization of the dc resistance unit ohm. Recently, the outstanding performance of graphene-based QH resistance (QHR) devices signifies an immense potential for a transition from GaAs to graphene-based devices in the field of resistance and also impedance metrology, with equally good accuracy. The recent developments in epitaxial graphene (EG) quality and fabrication of EG-based doped QHR devices and their improved performance tested in several national metrology institutes (NMIs) all over the world have demonstrated a more user-friendly dissemination of the unit ohm since they can be operated at relatively low magnetic fields and higher temperatures in comparison to existing GaAs-based devices. In this work, we have extensively tested the temporal stability of the magneto-transport properties of our graphene QH devices fabricated in the Physikalisch-Technische Bundesanstalt (PTB) and the resistance quantization performance by means of repeated high-accuracy cryogenic current comparator (CCC) measurements with several devices. Together with interlaboratory comparisons between NMIs, the performance and stability assessment demonstrate the readiness of the technology for calibration purposes in resistance metrology.
KW - CCC
KW - epitaxial graphene (EG)
KW - metrology
KW - quantum Hall (QH) effect
KW - resistance standards
UR - http://www.scopus.com/inward/record.url?scp=85161055369&partnerID=8YFLogxK
U2 - 10.1109/tim.2023.3280523
DO - 10.1109/tim.2023.3280523
M3 - Article
VL - 72
SP - 1
EP - 6
JO - IEEE Transactions on Instrumentation and Measurement
JF - IEEE Transactions on Instrumentation and Measurement
SN - 0018-9456
M1 - 1502206
ER -