Stable and tunable charge carrier control of graphene for quantum resistance metrology
Paper i proceeding, 2018
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.
graphene
quantum hall effect
measurement standards
chemical doping
Författare
Hans He
Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik
Samuel Lara Avila
Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik
Tobias Bergsten
RISE Research Institutes of Sweden
Gunnar Eklund
RISE Research Institutes of Sweden
Kyung Ho Kim
Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik
Rositza Yakimova
Linköpings universitet
Yung Woo Park
University of Pennsylvania
Seoul National University
Sergey Zuev
Chalmers, Matematiska vetenskaper, Analys och sannolikhetsteori
2018 Conference on Precision Electromagnetic Measurements (CPEM 2018)
8501252
2018 Conference on Precision Electromagnetic Measurements, CPEM 2018
Paris, France,
Paris, France,
Ämneskategorier
Medicinsk apparatteknik
Annan elektroteknik och elektronik
Den kondenserade materiens fysik
DOI
10.1109/CPEM.2018.8501252