J R Kirtley et al 1998 J. Phys.: Condens. Matter 10 L97 doi:10.1088/0953-8984/10/6/001
Magnetic imaging of the paramagnetic Meissner effect in the granular high-
superconductor 
J R Kirtley
, A C Mota
, M Sigrist§ and T M Rice||
LETTER TO THE EDITOR
We have imaged the spatial distribution of magnetic flux on a granular sample of the high-temperature superconductor 
using a scanning SQUID microscope. Our results establish the presence of spontaneous orbital magnetic moments which were suggested to be the origin of the paramagnetic response of these materials. The signature of the orbital magnetic moments is a rather broad distribution of local magnetic fields at the surface of the sample. A simple model for the distribution is presented.
- PACS
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74.81.Bd Granular, melt-textured, amorphous and composite superconductors
- Subjects
- Dates
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Issue 6 (16 February 1998)
Received 1 December 1997
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Magnetic imaging of the paramagnetic Meissner effect in the granular high- superconductor
J R Kirtley et al 1998 J. Phys.: Condens. Matter 10 L97
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