Development of miniature DC SQUID devices for the detection of single atomic spin-flips

نویسندگان

  • Christopher Ian Pakes
  • Patrick W. Josephs-Franks
  • R. P. Reed
  • Stephen G. Corner
  • Mark S. Colclough
چکیده

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 m 3 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.

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عنوان ژورنال:
  • IEEE Trans. Instrumentation and Measurement

دوره 50  شماره 

صفحات  -

تاریخ انتشار 2001