Comparison of Coulomb Blockade Thermometers with the International Temperature Scale PLTS-2000

Details Comparison of Coulomb Blockade Thermometers with the International Temperature Scale PLTS-2000 Comparison of Coulomb Blockade Thermometers with the International Temperature Scale PLTS-2000

2010-06-08

arxiv.org/abs/1006.1609v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 5 figures

Scientific paper

The operation of the primary Coulomb blockade thermometer (CBT) is based on a measurement of bias voltage dependent conductance of arrays of tunnel junctions between normal metal electrodes. Here we report on a comparison of a CBT with a high accuracy realization of the PLTS-2000 temperature scale in the range from 0.008 K to 0.65 K. An overall agreement of about 1% was found for temperatures above 0.25 K. For lower temperatures increasing differences are caused by thermalization problems which are accounted for by numerical calculations based on electron-phonon decoupling.

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