Refrigeration of a dielectric membrane by superconductor/insulator/normalmetal/insulator/superconductor tunneling

A. J. Manninen; M. M. Leivo; J. P. Pekola

doi:10.1063/1.118721

Refrigeration of a dielectric membrane by superconductor/insulator/normalmetal/insulator/superconductor tunneling

A. J. Manninen^*, M. M. Leivo, J. P. Pekola

^*Corresponding author for this work

Not published at Aalto University

Research output: Contribution to journal › Article › Scientific › peer-review

41 Citations (Scopus)

Abstract

We have applied tunneling of electrons between a normal metal and a superconductor to refrigerate a thin dielectric membrane attached to the normal electrode of a superconductor/ insulator/normal-metal/insulator/superconductor (SINIS) structure. Starting from T≈200 mK, a decrease in temperature of several mK was observed, measured by a separate thermometer on the membrane. It should be straightforward to improve the refrigerator performance to the level of the recently demonstrated SINIS electron cooling method, such that the drop in the lattice temperature would be more than an order of magnitude larger.

Original language	English
Pages (from-to)	1885-1887
Number of pages	3
Journal	Applied Physics Letters
Volume	70
Issue number	14
DOIs	https://doi.org/10.1063/1.118721
Publication status	Published - 1997
MoE publication type	A1 Journal article-refereed

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abstract = "We have applied tunneling of electrons between a normal metal and a superconductor to refrigerate a thin dielectric membrane attached to the normal electrode of a superconductor/ insulator/normal-metal/insulator/superconductor (SINIS) structure. Starting from T≈200 mK, a decrease in temperature of several mK was observed, measured by a separate thermometer on the membrane. It should be straightforward to improve the refrigerator performance to the level of the recently demonstrated SINIS electron cooling method, such that the drop in the lattice temperature would be more than an order of magnitude larger.",

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AB - We have applied tunneling of electrons between a normal metal and a superconductor to refrigerate a thin dielectric membrane attached to the normal electrode of a superconductor/ insulator/normal-metal/insulator/superconductor (SINIS) structure. Starting from T≈200 mK, a decrease in temperature of several mK was observed, measured by a separate thermometer on the membrane. It should be straightforward to improve the refrigerator performance to the level of the recently demonstrated SINIS electron cooling method, such that the drop in the lattice temperature would be more than an order of magnitude larger.

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