Selected Publications
 

Andreev current for low temperature thermometry

T. Faivre, D. Golubev, J. Pekola
We demonstrate experimentally that disorder enhanced Andreev current in a tunnel junction between a normal metal and a superconductor provides a method to measure electronic temperature, specifically at temperatures below 200 mK when aluminum is used. This Andreev thermometer has some advantages over conventional quasiparticle thermometers: For instance, it does not conduct heat and its reading does not saturate until at lower temperatures. Another merit is that the responsivity is constant over a wide temperature range.

applied physics letters 106 18, 1-4

doi: 10.1063/1.4919892