Cooling of a superconductor by quasiparticle tunneling
1999; American Institute of Physics; Volume: 74; Issue: 20 Linguagem: Inglês
10.1063/1.124051
ISSN1520-8842
AutoresA. J. Manninen, J. K. Suoknuuti, Mikko Leivo, J. P. Pekola,
Tópico(s)Superconductivity in MgB2 and Alloys
ResumoWe have extended the cryogenic cooling method based on tunneling between a superconductor and another metal to the case when both metals are superconducting but when their energy gaps are different; earlier, this method was applied between a superconductor and a normal metal. The electron system of a titanium strip with the superconducting transition temperature Tc2=0.51 K has been cooled from 1.02Tc2 to below 0.7Tc2 by this method, using aluminum as the other superconductor.
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