Direct current heating in superconductor-insulator-superconductor tunnel devices for THz mixing applications

被引：13

作者：

Dieleman, P ^{[1
]}

Klapwijk, TM ^{[1
]}

Kovtonyuk, S ^{[1
]}

vandeStadt, H ^{[1
]}

机构：

[1] UNIV GRONINGEN,CTR MAT SCI,9747 AG GRONINGEN,NETHERLANDS

来源：

APPLIED PHYSICS LETTERS | 1996年 / 69卷 / 03期

关键词：

D O I：

10.1063/1.118080

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

DC heating effects in superconductor-insulator-superconductor (SIS) tunnel junctions are studied by comparing junctions sandwiched between niobium or aluminum layers. With niobium a temperature rise of several Kelvin is observed, which is reduced by an order of magnitude by using aluminum. A simple model satisfactorily explains this observation and predicts a 30% increase in the subgap current due to the elevated temperature. At the operating voltage for heterodyne mixing the receiver noise temperature increases by only 2%. (C) 1996 American Institute of Physics.

引用

页码：418 / 420

页数：3

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