Vortex lattice structures in YNi{sub 2}B{sub 2}C
- Oak Ridge National Lab., TN (United States). Solid State Div.
- Univ. of Warwick, Coventry (United Kingdom). Dept. of Physics
- Univ. of Birmingham (United Kingdom). Dept. of Physics
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.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 554839
- Report Number(s):
- ORNL/CP-95242; CONF-970814-; ON: DE98000793; BR: KC0202010; TRN: 98:008863
- Resource Relation:
- Conference: International conference on neutron scattering (ICNS), Toronto (Canada), 17-21 Aug 1997; Other Information: PBD: [1997]
- Country of Publication:
- United States
- Language:
- English
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