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Microscopic measurement of penetration depth in YBa2Cu3O7-delta thin films by scanning Hall probe microscopy
Date
1997-01-01
Author
Oral, Ahmet
HUMPHREYS, RG
HENİNİ, M
Metadata
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We have used a low noise scanning Hall probe microscope to measure the penetration depth microscopically in a YBa2Cu3O7-delta thin film as a function of temperature. The instrument has high magnetic field (approximate to 2.9 x 10(-8) T HZ(-1/2) at 77 K) and spatial resolution ( approximate to 0.85 mu m). Magnetic field profiles of single vortices in the superconducting film have been successfully measured and the microscopic penetration depth of the superconductor has been extracted. We find surprisingly large variations in values of lambda for different vortices within the scanning field.
Subject Keywords
Temperature-dependence
,
Force microscopy
,
Vortex
,
Superconductors
URI
https://hdl.handle.net/11511/32840
Journal
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
DOI
https://doi.org/10.1088/0953-2048/10/1/003
Collections
Department of Physics, Article
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A. Oral, R. HUMPHREYS, and M. HENİNİ, “Microscopic measurement of penetration depth in YBa2Cu3O7-delta thin films by scanning Hall probe microscopy,”
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
, pp. 17–20, 1997, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32840.