Magnetic aging in Bi2Sr2CaCu2O8 displaying the paramagnetic meissner effect

E. L. Papadopoulou; P. Nordblad; P. Svedlindh; R. Schöneberger; R. Gross

doi:10.1103/PhysRevLett.82.173

Magnetic aging in Bi₂Sr₂CaCu₂O₈ displaying the paramagnetic meissner effect

E. L. Papadopoulou, P. Nordblad, P. Svedlindh, R. Schöneberger, R. Gross

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Abstract

Magnetic relaxation measurements have been performed on a bulk, melt-cast sample of Bi₂Sr₂CaCu₂O₈, displaying the paramagnetic Meissner effect (PME), revealing zero external field magnetic aging in a superconducting system. The aging effect, being a cooperative phenomenon, points out that the spontaneous orbital currents existing in PME samples behave collectively. The results can be understood by modeling of the polydomain microstructure of the superconducting grains as Josephson junction networks with randomly distributed π junctions.

Original language	English
Pages (from-to)	173-176
Number of pages	4
Journal	Physical Review Letters
Volume	82
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.82.173
State	Published - 1999
Externally published	Yes

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abstract = "Magnetic relaxation measurements have been performed on a bulk, melt-cast sample of Bi2Sr2CaCu2O8, displaying the paramagnetic Meissner effect (PME), revealing zero external field magnetic aging in a superconducting system. The aging effect, being a cooperative phenomenon, points out that the spontaneous orbital currents existing in PME samples behave collectively. The results can be understood by modeling of the polydomain microstructure of the superconducting grains as Josephson junction networks with randomly distributed π junctions.",

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AU - Papadopoulou, E. L.

AU - Nordblad, P.

AU - Svedlindh, P.

AU - Schöneberger, R.

AU - Gross, R.

PY - 1999

Y1 - 1999

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AB - Magnetic relaxation measurements have been performed on a bulk, melt-cast sample of Bi2Sr2CaCu2O8, displaying the paramagnetic Meissner effect (PME), revealing zero external field magnetic aging in a superconducting system. The aging effect, being a cooperative phenomenon, points out that the spontaneous orbital currents existing in PME samples behave collectively. The results can be understood by modeling of the polydomain microstructure of the superconducting grains as Josephson junction networks with randomly distributed π junctions.

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Magnetic aging in Bi₂Sr₂CaCu₂O₈ displaying the paramagnetic meissner effect

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