Journal of Low Temperature Physics

, Volume 154, Issue 5, pp 190–198

Calorimetric Readout of a Superconducting Proximity-Effect Thermometer

  • M. Meschke
  • J. T. Peltonen
  • H. Courtois
  • J. P. Pekola
Article

DOI: 10.1007/s10909-008-9854-y

Cite this article as:
Meschke, M., Peltonen, J.T., Courtois, H. et al. J Low Temp Phys (2009) 154: 190. doi:10.1007/s10909-008-9854-y

Abstract

A proximity-effect thermometer measures the temperature dependent critical supercurrent in a long superconductor—normal metal—superconductor (SNS) Josephson junction. Typically, the transition from the superconducting to the normal state is detected by monitoring the appearance of a voltage across the junction. We describe a new approach to detect the transition based on the temperature increase in the resistive state due to Joule heating. Our method increases the sensitivity and is especially applicable for temperatures below about 300 mK.

Keywords

Thermometry Mesoscopic Proximity effect 

PACS

74.78.Na 74.45.+c 

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • M. Meschke
    • 1
  • J. T. Peltonen
    • 1
  • H. Courtois
    • 1
    • 2
  • J. P. Pekola
    • 1
  1. 1.Low Temperature LaboratoryHelsinki University of TechnologyHelsinkiFinland
  2. 2.Institut Néel, CNRS and Université Joseph FourierGrenobleFrance