New mechanisms for irreversibility in high‐Tcsuperconductors (invited)

Autor:	Lia Krusin-Elbaum, D. C. Cronemeyer, F. Holtzberg, Alexis P. Malozemoff, Zhidong Hao, John R. Clem
Rok vydání:	1990
Předmět:	Physics Superconductivity Magnetization Condensed matter physics Meissner effect Remanence Condensed Matter::Superconductivity General Physics and Astronomy Field dependence Atmospheric temperature range Merge (version control) Magnetic flux
Zdroj:	Journal of Applied Physics. 67:4670-4675
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.344822
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8a8e141b7e4d6d8a5a9cd05481fd4163 https://doi.org/10.1063/1.344822 Zobrazit plný text záznamu