Development of a niobium nanosuperconducting quantum interference device for the detection of small spin populations

被引：134

作者：

Lam, SKH ^{[1
]}

Tilbrook, DL ^{[1
]}

机构：

[1] CSIRO, Telecommun & Ind Phys, Lindfield, NSW 2070, Australia

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 07期

关键词：

D O I：

10.1063/1.1554770

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Electron-beam lithography and reactive ion etching have been used to fabricate thin-film Au/Nb bridges with widths similar to50 nm. The Au layer was used as both a mask for etching the Nb superconducting bridge and as a resistive shunt in the completed devices. Using these junctions, a dc superconducting quantum interference device (SQUID) design with a hole size of 200 nmx200 nm (nano-SQUID) has also been fabricated and characterized. A flux noise of approximately 7x10(-6) Phi(0)/Hz(1/2) at 4.2 K has been achieved, from which a calculated spin sensitivity of 250 spin/Hz(1/2) is predicted. (C) 2003 American Institute of Physics.

引用

页码：1078 / 1080

页数：3

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