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Paramagnetic Meissner Effect in Superconducting Single Crystals of Ba_{1-x}K_xBiO_3

Hyun-Tak Kim·H. Minami·W. Schmidbauer·J. W. Hodby·A. Iyo·F. Iga·H. Uwe
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Abstract

The paramagnetic Meissner effect (PME) in the field cooled susceptibility has been observed in superconducting single crystals of Ba_{1-x}K_xBiO_3 using magnetometers of Quantum-Design Co.. The PME is similar to that observed in cuprates and Nb superconductors. For the Ba_{0.63}K_{0.37}BiO_3 crystal, the PME is observed in cooling process under the field up to 750 Oe. The PME was not found in the virgin-charged superconducting magnet. The PME is found in a superconductor with trapped flux and may arise from a remnant field, a temperature inhomogeneity near T_c, and a potassium-concentration inhomogeneity.

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Hyun-Tak Kim, H. Minami, W. Schmidbauer, J. W. Hodby, A. Iyo, F. Iga, H. Uwe. 2002-10-30. Paramagnetic Meissner Effect in Superconducting Single Crystals of Ba_{1-x}K_xBiO_3. https://doi.org/10.1007/bf00768444

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