Abstract
The paramagnetic Meissner effect (PME) is exemplified by positive field-cooled susceptibilities below the superconducting transition temperature and is possibly a signature ford-wave superconductivity in the cuprate superconductors. We have previously reported the occurrence of the PME in Nb disks and our present studies indicate ion implantation of the Nb surfaces not only enhances the positive field-cooled response already showing the PME, but can also induce the PME in other disks previously exhibiting only diamangnetic field-cooled susceptibilities. Thus the occurrence of the PME in Nb is neither an intrinsic property nor related to the superconducting pairing mechanism.
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