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Scanning superconducting quantum interference device microscope in a dilution refrigerator

Rev. Sci. Instrum. 72, 4153 (2001); doi:10.1063/1.1406931

Issue Date: November 2001

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Per G. Björnsson
Geballe Laboratory for Advanced Materials and Department of Applied Physics, McCullough Building, Stanford University, Stanford, California 94305-4045

Brian W. Gardner
Geballe Laboratory for Advanced Materials and Department of Physics, McCullough Building, Stanford University, Stanford, California 94305-4045

John R. Kirtley
IBM T.J. Watson Research Center, Yorktown Heights, New York 10598

Kathryn A. Moler
Geballe Laboratory for Advanced Materials and Department of Applied Physics, McCullough Building, Stanford University, Stanford, California 94305-4045
We report on a scanning superconducting quantum interference device microscope operating at temperatures down to 20 mK in a dilution refrigerator. The instrument is designed for studying quantum mechanical coherence effects in mesoscopic systems and investigating magnetic effects on a mesoscopic length scale in novel materials. We have demonstrated the low-temperature operating capabilities of the instrument by studying superconducting tin disks and the superconducting transition of a thin-film tungsten sample and vortices in the same film. Looking forward, we discuss the applicability of the instrument to measurements of persistent currents in normal-metal rings. ©2001 American Institute of Physics.
History: Received 30 March 2001; accepted 1 August 2001
Permalink: http://link.aip.org/link/?RSINAK/72/4153/1
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KEYWORDS and PACS

Keywords
PACS
  • 07.55.Jg
    Instruments, apparatus, and components common to several branches of physics and astronomy Magnetic instruments and components Magnetometers for susceptibility, magnetic moment, and magnetization measurements
  • 85.25.Dq
    Electronic and magnetic devices; microelectronics Superconducting devices Superconducting quantum interference devices (SQUIDs)
  • 07.79.-v
    Instruments, apparatus, and components common to several branches of physics and astronomy Scanning probe microscopes and components
  • 07.20.Mc
    Instruments, apparatus, and components common to several branches of physics and astronomy Thermal instruments and apparatus Cryogenics; refrigerators, low-temperature equipment
  • YEAR: 2001

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PUBLICATION DATA

ISSN:
0034-6748 (print)   1089-7623 (online)
Publisher:
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REFERENCES (20)
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