D.A. Bonn, Janice C. Wynn, et al.
Nature
Paper
Scanning superconducting quantum interference device susceptometry
Abstract
We report a scanning superconducting quantum interference device (SQUID) microsusceptometer with a spatial resolution of 8 μm, tested by measuring the susceptibility of individual 3 μm diam tin disks. Images of the disks agree well with numerical modeling based on the known geometry of the SQUID microsusceptometers. The low-field spin sensitivity between 1.5 and 6 K is 1 × 105μB/√Hz while scanning. © 2001 American Institute of Physics.
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