Quasiparticle behavior in tunnel junction refrigerators

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Description

We present simulations of quasiparticle creation, propagation, and loss in the superconducting electrode of a normal-insulator-superconductor tunnel junction refrigerator. We calculate the electronic temperature in the superconducting electrode from self-consistent solutions to the diffusion equation. We then calculate the power load on the normal electrode due to recombination phonons and the reduction in cooling power due to the elevated temperature of the superconductor. Our calculations explain the degraded cooling performance observed in 15-20 pm sized Ag/AlOx/Al junctions.

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487 Kilobytes pages

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Fisher, P A & Ullaom, J June 8, 1999.

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Description

We present simulations of quasiparticle creation, propagation, and loss in the superconducting electrode of a normal-insulator-superconductor tunnel junction refrigerator. We calculate the electronic temperature in the superconducting electrode from self-consistent solutions to the diffusion equation. We then calculate the power load on the normal electrode due to recombination phonons and the reduction in cooling power due to the elevated temperature of the superconductor. Our calculations explain the degraded cooling performance observed in 15-20 pm sized Ag/AlOx/Al junctions.

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487 Kilobytes pages

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  • Low Temperature Physics Conference 22, Helsinki (FI), 08/05/1999--08/10/1999

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  • Report No.: UCRL-JC-134803
  • Report No.: YN0100000
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 14306
  • Archival Resource Key: ark:/67531/metadc623468

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  • June 8, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • May 6, 2016, 1:54 p.m.

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Fisher, P A & Ullaom, J. Quasiparticle behavior in tunnel junction refrigerators, article, June 8, 1999; California. (digital.library.unt.edu/ark:/67531/metadc623468/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.