Development of miniature DC SQUID devices for the detection of single atomic spin-flips
Development of miniature DC SQUID devices for the detection of single atomic spin-flips
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开发用于检测单原子自旋翻转的微型 DC SQUID 装置
DOI：
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发表时间：
2001
影响因子：
5.6
通讯作者：
M. Colclough
中科院分区：
文献类型：
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作者：
C. Pakes;P. Josephs;R. Reed;S. G. Corner;M. Colclough
我们报道了一种基于超导量子干涉装置(SQUID)的系统的进展，该系统能够检测到几个原子的自旋翻转。对小型Nb DC SQUID器件的磁通灵敏度随SQUID回路尺寸的定标进行了研究，实验表明其变化与预测的一致。我们最小的设备，环路大小为3/SPL MU/m/SPL次/3/SPL MU/m，能够在1赫兹的带宽内检测40个自旋。我们解决了在SQUID环内存放纳米尺度的样本的任务。
We report progress toward a superconducting quantum interference device (SQUID)-based system capable of detecting a few atomic spin-flips. The scaling of the flux sensitivity with SQUID loop dimension of miniature niobium dc SQUID devices is examined and shown experimentally to vary as predicted. Our smallest device, with loop size 3 /spl mu/m/spl times/3 /spl mu/m, is capable of detecting 40 spins in a 1-Hz bandwidth. We address the task of depositing a sample, of nanoscale dimension, within the SQUID loop.