Authors
Consultative Committee for Electricity and Magnetism, Task Group on Graphene Quantum Hall Resistance Standards, Albert F Rigosi, Hansjörg Scherer, Mathieu Taupin, Luca Callegaro, Hans He, Susmit Kumar, Ali Eichenberger, Mattias Kruskopf, Yanfei Yang, Martina Marzano, Stephen Giblin, Sergiy Rozhko, Takehiko Oe, Dong-Hun Chae, Pierre Gournay
Published in
Metrologia. Volume 63. Issue 3.
Abstract
This companion guide revises and expands upon the established technical guidelines for reliable direct current measurements of the quantized Hall resistance, adapting them to the unique characteristics of epitaxial graphene. Graphene has emerged as a viable alternative to traditional Gallium Arsenide heterostructures for metrological applications due to its relaxed operating conditions. These less demanding requirements facilitate the use of low-cost, compact cryomagnet platforms, which is expected to broaden the deployment of primary resistance standards to National Metrology Institutes and other laboratories with limited resources. The guide explores the specific challenges and considerations of epitaxial graphene devices, including aspects of device choice, cooling and handling, contact resistance, conditions of quantization, and general measurements of the quantized Hall resistance. The presented details should assist those seeking to conduct rigorous characterization procedures to verify device integrity, ultimately contributing to a global effort to formally accept graphene-based devices as reliable primary resistance standards.
PMID:
42529682
Bibliographic data and abstract were imported from PubMed on 30 Jul 2026.
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