Vortex imaging in superconducting films by scanning Hall probe microscopy

Journal Article · Sun Dec 01 00:00:00 EST 1996 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/BF00753852· OSTI ID:443637

Oral, A; Bending, S J ^[1]; Humphreys, R G ^[2]

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1. Univ. of Bath (United Kingdom)
2. Malvern, Worcestershire (United Kingdom); and others

The authors have used a low noise Scanning Hall Probe Microscope (SHPM) to study vortex structures in superconducting films. The microscope has high magnetic field ({approximately}2.9 x 10{sup {minus}8}T/{radical}Hz at 77K) and spatial resolution, {approximately}0.85 {mu}m. Magnetic field profiles of single vortices in High T{sub c} YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} thin films have been successfully measured and the microscopic penetration depth of the superconductor has been extracted as a function of temperature. Flux penetration into the superconductor has been imaged in real time ({approximately}8s/frame).

• Sponsoring Organization: USDOE
• OSTI ID: 443637
• Report Number(s): CONF-960808-; ISSN 0022-2291; TRN: 97:000865-0010
• Journal Information: Journal of Low Temperature Physics, Vol. 105, Issue 5-6; Conference: 3. international conference on physics and chemistry of molecular and oxide superconductors, Karlsruhe (Germany), 2-6 Aug 1996; Other Information: PBD: Dec 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
YTTRIUM OXIDES
MAGNETIC FLUX
PENETRATION DEPTH
BARIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
SUPERCONDUCTING FILMS