New mechanisms for irreversibility in high-T c superconductors (invited)
- 1 May 1990
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 67 (9) , 4670-4675
- https://doi.org/10.1063/1.344822
Abstract
We discuss the zero‐field cooled (ZFC), field‐cooled (FC), and remanent (rem) magnetization of YBaCuO crystals in the context of an extended Bean critical‐state model. We introduce a novel way to include the reversible magnetization in this theory and show how this can explain the concave‐downwards shape of the ZFC magnetization near Tc. We explain the persistence of remanence in a temperature range where FC and ZFC magnetizations merge in terms of a residual irreversibility arising from a step in the reversible B(H) curve. We also introduce the concept of a flux‐trapping depth which helps explain the field dependence of the Meissner effect.This publication has 21 references indexed in Scilit:
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