Vortex lattice structures in YNi{sub 2}B{sub 2}C

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The authors observe a flux lattice with square symmetry in the superconductor YNi{sub 2}B{sub 2}C when the applied field is parallel to the c-axis of the crystal. A square lattice observed previously in the isostructural magnetic analog ErNi{sub 2}B{sub 2}C was attributed to the interaction between magnetic order in that system and the flux lattice. Since the Y-based compound does not order magnetically, it is clear that the structure of the flux lattice is unrelated to magnetic order. In fact, they show that the flux lines have a square cross-section when the applied field is parallel to the c-axis of ... continued below

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5 p.

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Yethiraj, M.; Paul, D.M.; Tomy, C.V. & Forgan, E.M. December 1, 1997.

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  • Yethiraj, M. Oak Ridge National Lab., TN (United States). Solid State Div.
  • Paul, D.M.
  • Tomy, C.V. Univ. of Warwick, Coventry (United Kingdom). Dept. of Physics
  • Forgan, E.M. Univ. of Birmingham (United Kingdom). Dept. of Physics

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Description

The authors observe a flux lattice with square symmetry in the superconductor YNi{sub 2}B{sub 2}C when the applied field is parallel to the c-axis of the crystal. A square lattice observed previously in the isostructural magnetic analog ErNi{sub 2}B{sub 2}C was attributed to the interaction between magnetic order in that system and the flux lattice. Since the Y-based compound does not order magnetically, it is clear that the structure of the flux lattice is unrelated to magnetic order. In fact, they show that the flux lines have a square cross-section when the applied field is parallel to the c-axis of the crystal, since the measured penetration depth along the 100 crystal direction is larger than the penetration depth along the 110 by approximately 60%. This is the likely reason for the square symmetry of the lattice. Although they find considerable disorder in the arrangement of the flux lines at 2.5T, no melting of the vortex lattice was observed.

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5 p.

Notes

INIS; OSTI as DE98000793

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  • International conference on neutron scattering (ICNS), Toronto (Canada), 17-21 Aug 1997

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  • Other: DE98000793
  • Report No.: ORNL/CP--95242
  • Report No.: CONF-970814--
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 554839
  • Archival Resource Key: ark:/67531/metadc694723

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  • December 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Jan. 25, 2016, 8:03 p.m.

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Yethiraj, M.; Paul, D.M.; Tomy, C.V. & Forgan, E.M. Vortex lattice structures in YNi{sub 2}B{sub 2}C, article, December 1, 1997; Tennessee. (digital.library.unt.edu/ark:/67531/metadc694723/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.