Resistive transition of niobium superconducting hot-electron bolometer mixers

被引：23

作者：

Floet, DW ^{[1
]}

Baselmans, JJA

Klapwijk, TM

Gao, JR

机构：

[1] Univ Groningen, Dept Appl Phys, NL-9747 AG Groningen, Netherlands

[2] Univ Groningen, Ctr Mat Sci, NL-9747 AG Groningen, Netherlands

[3] Space Res Org Netherlands, NL-9747 AG Groningen, Netherlands

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 19期

关键词：

D O I：

10.1063/1.122603

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a model for the description of the resistive transition in hot-electron bolometer mixers. We show that the transition is a property of a superconducting microbridge connected to normal conducting cooling pads. Using the concepts of the superconducting proximity effect, charge-imbalance generation, and Andreev reflection, we have calculated the resistance versus temperature of the device and demonstrate its dependence on the length of the microbridge, both theoretically and experimentally. The analysis reopens the question of the relationship between the resistive transition and the situation in which the device is optimally operated as a heterodyne mixer. (C) 1998 American Institute of Physics. [S0003-6951(98)02245-1].

引用

页码：2826 / 2828

页数：3

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