Miniature dc SQUID devices for the detection of single atomic spin-flips

被引：35

作者：

Gallop, J

Josephs-Franks, PW

Davies, J

Hao, L

Macfarlane, J

机构：

[1] Natl Phys Lab, Teddington TW11 0LW, Middx, England

[2] Univ Strathclyde, Dept Phys & Appl Phys, Glasgow G4 0NG, Lanark, Scotland

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 368卷 / 1-4期

关键词：

SQUID; electronic spin; scanned probe microscopy;

D O I：

10.1016/S0921-4534(01)01149-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report progress towards a superconducting quantum interference device (SQUID) based system capable of detecting single atomic spin-flips. The scaling of the flux sensitivity with SQUID loop dimension of miniature Nb dc SQUIDs is examined and shown experimentally to vary as predicted. Our smallest device, with loop size 3 x 3 mum(2), is capable of detecting a few spins in a 1 Hz bandwidth. We address the task of depositing a sample, of nanoscale dimension, within the SQUID loop. (C) 2001 Published by Elsevier Science B.V.

引用

页码：109 / 113

页数：5

共 8 条

[1] AN ABSOLUTE SQUID MAGNETOMETER [J].