Design and Implementation of A Scanning Squid Microscope

L. N. Vu; D. J. Van Harlingen

doi:10.1109/77.233586

Design and Implementation of A Scanning Squid Microscope

L. N. Vu, D. J. Van Harlingen

Physics

Research output: Contribution to journal › Letter › peer-review

Abstract

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 language	English (US)
Pages (from-to)	1918-1921
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	3
Issue number	1
DOIs	https://doi.org/10.1109/77.233586
State	Published - Mar 1993

ASJC Scopus subject areas

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

Online availability

10.1109/77.233586

Library availability

Discover UIUC Full Text

Cite this

@article{9bca95c0ad904a4194a041dc051b6819,

title = "Design and Implementation of A Scanning Squid Microscope",

abstract = "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.",

author = "Vu, {L. N.} and {Van Harlingen}, {D. J.}",

note = "Funding Information: It is useful to characterize the capabilities of various magnetic imaging instruments by indicating their magnetic Manuscript received August 24. 1992. * Work supported by the National Science Foundation grant NSF-DMR91-15411. We also acknowledge use of the Microfabrication Facilities of the Materials Research Laboratory of the University of Illinois.",

year = "1993",

month = mar,

doi = "10.1109/77.233586",

language = "English (US)",

volume = "3",

pages = "1918--1921",

journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "1",

}

TY - JOUR

T1 - Design and Implementation of A Scanning Squid Microscope

AU - Vu, L. N.

AU - Van Harlingen, D. J.

N1 - Funding Information: It is useful to characterize the capabilities of various magnetic imaging instruments by indicating their magnetic Manuscript received August 24. 1992. * Work supported by the National Science Foundation grant NSF-DMR91-15411. We also acknowledge use of the Microfabrication Facilities of the Materials Research Laboratory of the University of Illinois.

PY - 1993/3

Y1 - 1993/3

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0027560474&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027560474&partnerID=8YFLogxK

U2 - 10.1109/77.233586

DO - 10.1109/77.233586

M3 - Letter

AN - SCOPUS:0027560474

SN - 1051-8223

VL - 3

SP - 1918

EP - 1921

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

IS - 1

ER -

Design and Implementation of A Scanning Squid Microscope

Abstract

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this