A coaxial cryogenic probe for quantum Hall effect measurements in the AC regime |
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| Martina Marzano, Ngoc Thanh Mai Tran, Vincenzo D Elia, Danilo Serazio, Emanuele Enrico, Massimo Ortolano, Klaus Pierz, Jan Kucera, Luca Callegaro |
- Abstract:
- The quantum Hall effect is the basis for the realisation of the resistance and impedance units in the revised International System of units of 2019. This paper describes a cryogenic probe that allows to set graphene Hall devices in quantisation conditions in a helium bath (4.2 K) and magnetic fields up to 6 T, to perform precision measurements in the ac regime with impedance bridges. The probe has a full coaxial wiring, isolated from the probe structure, and holds the device in a TO-8 socket. First characterisation experiments are reported on a GaAs device which shows quantisation at 5.5 T.
- Download:
- IMEKO-TC4-2020-44.pdf
- DOI:
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