Proximity effect thermometer for local temperature measurements on mesoscopic samples

Details Proximity effect thermometer for local temperature measurements on mesoscopic samples Proximity effect thermometer for local temperature measurements on mesoscopic samples

2001-05-04

arxiv.org/abs/cond-mat/0105083v2

Appl. Phys. Lett. 75, 3554 (1999)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1063/1.125386

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 dc current 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 current flowing in the sample. This technique may provide a flexible means of making quantitative thermal and thermoelectric measurements on mesoscopic metallic samples.

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