Next-generation crossover-free quantum Hall arrays with superconducting interconnections. (10th October 2019)

• Record Type: Journal Article
• Authors: Kruskopf, Mattias; Rigosi, Albert F; Panna, Alireza R; Marzano, Martina; Patel, Dinesh; Jin, Hanbyul; Newell, David B; Elmquist, Randolph E
• Is Part Of: Metrologia. Volume 56:Number 6(2019:Dec.)
• Publication Date: 2019-10-10
• Subjects: quantum Hall effect -- epitaxial graphene -- superconducting contacts -- multiple connection -- split contacts -- quantized Hall array resistance standards; Weights and measures -- Periodicals; Weights and Measures -- Periodicals; 530.805
• DOI: 10.1088/1681-7575/ab3ba3
• Languages: English
• ISSNs: 0026-1394

Abstract

Abstract: This work presents precision measurements of quantized Hall array resistance devices using superconducting, crossover-free and multiple interconnections as well as graphene split contacts. These new techniques successfully eliminate the accumulation of internal resistances and leakage currents that typically occur at interconnections and crossing leads between interconnected devices. As a result, a scalable quantized Hall resistance array is obtained with a nominal value that is as precise and stable as that from single-element quantized Hall resistance standards.