Tunnelling cooling by a normal--vacuum--superconductor junction

doi:10.1088/1009-1963/16/9/027

中国物理B ›› 2007, Vol. 16 ›› Issue (9): 2656-2660.doi: 10.1088/1009-1963/16/9/027

Tunnelling cooling by a normal--vacuum--superconductor junction

张鑫¹, 张殿琳²

(1)Department of Physics, Northwest University, Xi'an 710069, China;Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; (2)Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China

收稿日期:2007-03-07 修回日期:2007-03-12 出版日期:2007-09-20 发布日期:2007-09-20

Tunnelling cooling by a normal--vacuum--superconductor junction

Zhang Xin(张鑫)^a)b)† and Zhang Dian-Lin(张殿琳)^b)

^a Department of Physics, Northwest University, Xi'an 710069, China; ^b Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China

Received:2007-03-07 Revised:2007-03-12 Online:2007-09-20 Published:2007-09-20

摘要/Abstract

摘要： The possibility of cooling a system from liquid helium temperature, 4.2~K, using a tunnel junction refrigerator is analysed. Calculations show that the device can be used over a wide temperature range from 4~K down to well below 1~mK with necessary cooling power. However, several serious difficulties must be overcome before the method can be used in low temperature laboratories.

关键词: normal--vacuum--superconductor junction, tunnelling refrigeration, low temperature

Abstract: The possibility of cooling a system from liquid helium temperature, 4.2 K, using a tunnel junction refrigerator is analysed. Calculations show that the device can be used over a wide temperature range from 4 K down to well below 1 mK with necessary cooling power. However, several serious difficulties must be overcome before the method can be used in low temperature laboratories.

Key words: normal--vacuum--superconductor junction, tunnelling refrigeration, low temperature

中图分类号: (Cryogenics; refrigerators, low-temperature detectors, and other low-temperature equipment)

07.20.Mc

74.45.+c (Proximity effects; Andreev reflection; SN and SNS junctions) 74.50.+r (Tunneling phenomena; Josephson effects)

张鑫, 张殿琳. Tunnelling cooling by a normal--vacuum--superconductor junction[J]. 中国物理B, 2007, 16(9): 2656-2660.

Zhang Xin(张鑫) and Zhang Dian-Lin(张殿琳). Tunnelling cooling by a normal--vacuum--superconductor junction[J]. Chinese Physics, 2007, 16(9): 2656-2660.

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Tunnelling cooling by a normal--vacuum--superconductor junction

Tunnelling cooling by a normal--vacuum--superconductor junction

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