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Title: Superconducting cascade electron refrigerator

The design and operation of an electronic cooler based on a combination of superconducting tunnel junctions is described. The cascade extraction of hot-quasiparticles, which stems from the energy gaps of two different superconductors, allows for a normal metal to be cooled down to about 100 mK starting from a bath temperature of 0.5 K. We discuss the practical implementation, potential performance, and limitations of such a device.
Authors:
;  [1] ; ;  [2] ; ;  [3] ;  [4]
  1. NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, 56127 Pisa (Italy)
  2. LPMMC, CNRS and Université Joseph Fourier, 38042 Grenoble (France)
  3. Univ. Grenoble Alpes, Institut Néel, 38042 Grenoble (France)
  4. (France)
Publication Date:
OSTI Identifier:
22280371
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 19; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRONS; ENERGY GAP; HEAT EXCHANGERS; QUASI PARTICLES; REFRIGERATORS; SUPERCONDUCTING JUNCTIONS; TEMPERATURE RANGE 0000-0013 K