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Stable and Tunable Charge Carrier Control of Graphene for Quantum Resistance Metrology
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
RISE - Research Institutes of Sweden, Säkerhet och transport, Mätteknik.ORCID-id: 0000-0003-2330-9898
RISE - Research Institutes of Sweden, Säkerhet och transport, Mätteknik.
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2018 (Engelska)Ingår i: 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018), 2018Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Here we demonstrate a stable and tunable method to alter the carrier concentration of epitaxial graphene grown on silicon carbide. This technique relies on chemical doping by an acceptor molecule. Through careful tuning one can produce chemically doped graphene quantum resistance devices which show long-term stability in ambient conditions and have performance comparable to that of GaAs quantum resistance standards. This development paves the way for controlled device fabrication of graphene quantum hall resistance standards, which can be reliably tailored to operate below 5 T and above 4 K out-of-the-box, without further adjustments from the end-user.

Ort, förlag, år, upplaga, sidor
2018.
Nyckelord [en]
chemical doping, graphene, measurement standards, quantum hall effect, Carrier concentration, Gallium arsenide, Graphene devices, III-V semiconductors, Silicon carbide, Acceptor molecules, Ambient conditions, Device fabrications, Long term stability, Quantum Hall resistance, Quantum resistance
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-36603DOI: 10.1109/CPEM.2018.8501252Scopus ID: 2-s2.0-85057054632ISBN: 9781538609736 (tryckt)OAI: oai:DiVA.org:ri-36603DiVA, id: diva2:1271292
Konferens
2018 Conference on Precision Electromagnetic Measurements, CPEM 2018, 8 July 2018 through 13 July 2018
Anmärkning

Funding details: National Research Foundation of Korea, NRF; Funding details: VINNOVA; Funding details: Vetenskapsrådet, VR; Funding details: Stiftelsen för Strategisk Forskning, SSF; Funding details: Nanoscience and Nanotechnology Area of Advance, Chalmers Tekniska Högskola; Funding details: Sjögren’s Syndrome Foundation, SSF, IS14-0053; Funding details: Knut och Alice Wallenbergs Stiftelse

Tillgänglig från: 2018-12-17 Skapad: 2018-12-17 Senast uppdaterad: 2018-12-17Bibliografiskt granskad

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Bergsten, Tobias

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