Improvements in the quantum Hall resistance standard at VTT

Alexandre Satrapinski, Aarne Oja, Heikki Seppä

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    Abstract

    This paper describes improvements in the realisation of the quantum Hall effect (QHE) resistance standard at VTT and presents the results of the latest measurements. A new superconducting magnet and a new QHE sample were used to calibrate standard resistors in terms of RK-90, (RK-90=25812.807 Ω is the conventional value of the von Klitzing constant RK). A 100 Ω standard resistor was calibrated directly against the quantum Hall resistance (QHR) on i = 2 plateau using a low-frequency cryogenic ac resistance bridge based on the cryogenic current comparator (CCC). The same cryogenic ac bridge was used to trace the 1 Ω and 10 kΩ standard resistors from the 100 Ω standard.
    Original languageEnglish
    Title of host publication1998 Conference on Precision Electromagnetic Measurements Digest
    Place of PublicationWashington
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Pages412-413
    ISBN (Print)0-7803-5018-9
    DOIs
    Publication statusPublished - 1998
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventConference on Precision Electromagnetic Measurements, CPEM 98 - Washington, DC, United States
    Duration: 6 Jul 199810 Jul 1998

    Conference

    ConferenceConference on Precision Electromagnetic Measurements, CPEM 98
    CountryUnited States
    CityWashington, DC
    Period6/07/9810/07/98

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