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

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We 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, we show that the flux lines have a square cross-section when the applied field is parallel to the c-axis of the ... continued below

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6 p.

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Yethiraj, M.; Paul, D.M. & Tomy, C.V. September 1, 1997.

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We 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, we 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 110 crystal direction is smaller than the penetration depth along the 100 by approximately 30%. This causes the square symmetry of the lattice. Although we 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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6 p.

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OSTI as DE97008444

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

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  • Other: DE97008444
  • Report No.: CONF-970814--4
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 522770
  • Archival Resource Key: ark:/67531/metadc698728

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  • September 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Jan. 25, 2016, 12:29 p.m.

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Yethiraj, M.; Paul, D.M. & Tomy, C.V. Vortex lattice structures in YNi{sub 2}B{sub 2}C, article, September 1, 1997; Tennessee. (digital.library.unt.edu/ark:/67531/metadc698728/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.