3DXYScaling of the Irreversibility Line ofYBa2Cu3O7Crystals

Autor:	John Loram, J. D. Johnson, J.W. Hodby, J. R. Cooper, Chen Changkang
Rok vydání:	1997
Předmět:	Physics Magnetization Condensed matter physics Oxygen deficient General Physics and Astronomy Melting line Crystal twinning Critical field Scaling Energy (signal processing) Line (formation)
Zdroj:	Physical Review Letters. 79:1730-1733
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.79.1730
Popis:	We find experimentally that the irreversibility line, H{sub irr}(T) , and the reversible magnetization of twinned YBa{sub 2}Cu {sub 3}O{sub 7} crystals both show 3D XY scaling, which suggests a common origin for both quantities. Analysis of this result and of a correlation between the condensation energy and H{sub irr}(T) of oxygen deficient YBa{sub 2}Cu {sub 3}O{sub 7{minus}{delta}} for 0{lt}{delta}{lt}0.6 , implies that H{sub irr}(T) is strongly influenced by critical fluctuations. It is possible that these values of H{sub irr}(T) and the recently discovered vortex melting line, H{sub m}(T) , both correspond to an upper critical field line which has been suppressed by thermodynamic fluctuations. {copyright} {ital 1997} {ital The American Physical Society}
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::714d9be74b3de322c7d76aabfed8c35c https://doi.org/10.1103/physrevlett.79.1730 Zobrazit plný text záznamu