Design and Implementation of A Scanning Squid Microscope

Research output: Contribution to journalLetterpeer-review


We have developed a cryogenic two-dimensional magnetic imaging system that incorporates a sensitive dc SQUID detector. In this instrument, which we call the Scanning SQUID Microscope (SSM), a flux transformer coupled to the SQUID is scanned over the surface of a planar sample by a room temperature, stepping motor-controlled manipulator with a positional resolution of about 2μm. With our present input coil, spatial resolution of 20μm and a flux sensitivity at the sample of 10-5Φ0/Hz 1/2 is attainable. This system has been specifically designed to image the vortex structure and dynamics of weakly-coupled superconductor arrays.

Original languageEnglish (US)
Pages (from-to)1918-1921
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number1
StatePublished - Mar 1993

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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