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Title: Andreev current for low temperature thermometry

Abstract

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.

Authors:
;  [1];  [1];  [2]
  1. Low Temperature Laboratory, Department of Applied Physics, Aalto University School of Science, P.O. Box 13500, FI-00076 Aalto (Finland)
  2. (KIT), Institute of Nanotechnology, 76021 Karlsruhe (Germany)
Publication Date:
OSTI Identifier:
22399008
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 106; Journal Issue: 18; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM; ELECTRIC CURRENTS; HEAT TRANSFER; SUPERCONDUCTING JUNCTIONS; SUPERCONDUCTORS; TEMPERATURE RANGE 0000-0013 K; THERMOMETERS; TUNNEL EFFECT

Citation Formats

Faivre, T., E-mail: timothe.faivre@aalto.fi, Pekola, J. P., Golubev, D. S., and Karlsruhe Institute of Technology. Andreev current for low temperature thermometry. United States: N. p., 2015. Web. doi:10.1063/1.4919892.
Faivre, T., E-mail: timothe.faivre@aalto.fi, Pekola, J. P., Golubev, D. S., & Karlsruhe Institute of Technology. Andreev current for low temperature thermometry. United States. doi:10.1063/1.4919892.
Faivre, T., E-mail: timothe.faivre@aalto.fi, Pekola, J. P., Golubev, D. S., and Karlsruhe Institute of Technology. Mon . "Andreev current for low temperature thermometry". United States. doi:10.1063/1.4919892.
@article{osti_22399008,
title = {Andreev current for low temperature thermometry},
author = {Faivre, T., E-mail: timothe.faivre@aalto.fi and Pekola, J. P. and Golubev, D. S. and Karlsruhe Institute of Technology},
abstractNote = {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.},
doi = {10.1063/1.4919892},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 18,
volume = 106,
place = {United States},
year = {2015},
month = {5}
}