Andreev current-induced dissipation in a hybrid superconducting tunnel junction

被引：64

作者：

Rajauria, Sukumar ^{[1
]}

Gandit, P. ^{[1
]}

Fournier, T. ^{[1
]}

Hekking, F. W. J. ^{[2
]}

Pannetier, B. ^{[1
]}

Courtois, H. ^{[1
,3
]}

机构：

[1] CNRS, Inst Neel, F-38042 Grenoble, France

[2] Univ Grenoble 1, LPMMC, F-38042 Grenoble, France

[3] Inst Univ France, Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.100.207002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied hybrid superconducting microcoolers made of a double superconductor-insulator-normal metal tunnel junction. Under subgap conditions, the Andreev current is found to dominate the single-particle tunnel current. We show that the Andreev current introduces additional dissipation in the normal metal equivalent to Joule heating. By analyzing quantitatively the heat balance in the system, we provide a full description of the evolution of the electronic temperature with the voltage. The dissipation induced by the Andreev current is found to dominate the quasiparticle tunneling-based cooling over a large bias range.

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页数：4

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