A Table-Top Graphene Quantized Hall Standard

Published: July 08, 2018

Author(s)

Albert F. Rigosi, Alireza R. Panna, Shamith U. Payagala, George R. Jones, Marlin E. Kraft, Mattias Kruskopf, Bi Yi Wu, Hsin Yen Lee, Yanfei Yang, Dean G. Jarrett, Randolph E. Elmquist, David B. Newell

Abstract

We report the performance of a quantum standard based on epitaxial graphene maintained in a 5 T table-top cryocooler system. The ν = 2 resistance plateau, with a value of RK-90/2, is used to scale to 1 kΩ, allowing comparisons of the performance of a binary cryogenic current comparator (BCCC) bridge and a room-temperature direct current comparator (DCC). The preliminary uncertainties achieved with the DCC are about 1 part in 108, while the BCCC uncertainty is like that obtained in state-of-the-art measurements using GaAs-based devices. This quantum standard requires no liquid He and can operate continuously, allowing year-round accessibility to traceable resistance measurements.
Proceedings Title: IEEE Proceedings
Conference Dates: July 8-14, 2018
Conference Location: Paris, -1
Conference Title: Conference on Precision Electromagnetic Measurements (CPEM) 2018
Pub Type: Conferences

Keywords

quantized Hall resistance, epitaxial graphene, binary cryogenic current comparator, direct current comparator, standard resistor
Created July 08, 2018, Updated March 29, 2018