Macroscopic persistent currents in YBa2Cu3O7

6533b7cffe1ef96bd1258f47

RESEARCH PRODUCT

Macroscopic persistent currents in YBa2Cu3O7

subject

chemistry.chemical_classification Materials science High-temperature superconductivity Condensed matter physics pacs:68.35.Ja Persistent current Condensed Matter Physics Ring (chemistry)Magnetic flux Electronic Optical and Magnetic Materials law.invention Sample quality chemistry pacs:67.70.+n law Condensed Matter::Superconductivity ddc:530 General Materials Science Crystallite Critical current pacs:61.12.Ex Inorganic compound

description

Persistent currents in polycrystalline YBa2Cu3O7 rings have been investigated by measuring the spatial distribution of the magnetic flux trapped in field-cooled samples. The results unambiguously show that macroscopic persistent ring currents exist. The critical current density depends very sensitively on the sample quality, reachingj c ≈250 A/cm2 at 77 K for our best samples.

year	journal	country	edition	language
1988-06-01	Zeitschrift f�r Physik B Condensed Matter

https://doi.org/10.1007/bf01318291

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