title: Accurate Coulomb blockade thermometry up to 60 kelvin.
abstract: We demonstrate experimentally a precise realization of Coulomb blockade thermometry working at temperatures up to 60 K. Advances in nano-fabrication methods using electron beam lithography allow us to fabricate uniform arrays of sufficiently small tunnel junctions to guarantee an overall temperature reading precision of about 1%.
authors.affiliation: Low Temperature Laboratory, Department of Applied Physics, Aalto University School of Science, PO Box 13500, Aalto 00076, Finland matthias.meschke@aalto.fi.
authors.forename: M
authors.initials: M
authors.lastname: Meschke
authors.affiliation: VTT Technical Research Centre of Finland Ltd, Centre for Metrology MIKES, PO Box 1000, VTT 02044, Finland.
authors.forename: A
authors.initials: A
authors.lastname: Kemppinen
authors.affiliation: Low Temperature Laboratory, Department of Applied Physics, Aalto University School of Science, PO Box 13500, Aalto 00076, Finland.
authors.forename: J P
authors.initials: JP
authors.lastname: Pekola
keywords: low temperature; nano-fabrication; primary thermometry