Anisotropically splayed and columnar defects in untwinnedYBa2Cu3O7−δ

Autor:	R. M. Ronningen, Lisa Paulius, W. K. Kwok, V. M. Vinokur, G. W. Crabtree, A. M. Petrean
Rok vydání:	1998
Předmět:	Condensed Matter::Soft Condensed Matter Materials science Condensed matter physics Field (physics) Plane (geometry) Condensed Matter::Superconductivity Perpendicular Crystallographic defect Magnetic flux Energy (signal processing) Vortex Ion
Zdroj:	Physical Review B. 58:14594-14608
ISSN:	1095-3795 0163-1829
Popis:	Pinning by splayed and columnar defects created by 3.9 GeV {sup 197}Au{sup 29+} ions is investigated using transport measurements of vortex motion perpendicular and parallel to the splay plane in untwinned crystals of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}. These results are compared with a sample with parallel columnar defects parallel to the {ital c} axis. We report on the temperature, field, and angular dependence of the vortex liquid and solid state. We find that, at twice the matching field, the irreversibility lines for pre- and post-irradiated splayed-defect samples cross. We determine the vortex liquid pinning energy for splayed and columnar defects and show that the barrier to vortex motion perpendicular to the splay plane is greater than that to motion parallel to the splay plane. {copyright} {ital 1998} {ital The American Physical Society}
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8d5e7b95f004a49b4668f6a7ce120b10 https://doi.org/10.1103/physrevb.58.14594 Zobrazit plný text záznamu