Proximity effect thermometer for local electron temperature measurements on mesoscopic samples

J. Aumentado*, V. Chandrasekhar, J. Eom, P. M. Baldo, L. E. Rehn

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Using the strong temperature-dependent resistance of a normal metal wire in proximity to a superconductor, we have been able to measure the local temperature of electrons heated by flowing a direct-current (dc) in a metallic wire to within a few tens of millikelvin at low temperatures. By placing two such thermometers at different parts of a sample, we have been able to measure the temperature difference induced by a dc flowing in the samples. This technique may provide a flexible means of making quantitative thermal and thermoelectric measurements on mesoscopic metallic samples.

Original languageEnglish (US)
Pages (from-to)3554-3556
Number of pages3
JournalApplied Physics Letters
Volume75
Issue number22
DOIs
StatePublished - Nov 29 1999

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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