1997/12/10 by J. R. Kirtley, A. C. Mota, Kirtley, J. R. +6
Earth and Planetary Sciences · Physics and Astronomy · #FOS: Physical sciences #High-pressure geophysics and materials #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/9712113
10 pages, 4 figures
arxiv created 1997/12/10 · openalex publication_date 1997/12/10 · arxiv updated 2009/11/30 · openalex created_date 2019/07/30 · openalex updated_date 2026/07/28
We have imaged the spatial distribution of magnetic flux on a granular sample\nof the high-temperature superconductor Bi2Sr2CaCu2Ox using a scanning SQUID\nmicroscope. Our results establish the presence of spontaneous orbital magnetic\nmoments which were suggested to be the origin of the paramagnetic response of\nthese materials. The signature of the orbital magnetic moments is a rather\nbroad distribution of local magnetic fields at the surface of the sample. A\nsimple model for the distribution is presented.\n