Abstract
We compare the results of small angle neutron scattering on the flux line lattice (FLL) obtained in the borocarbide superconductor LuNi2B2C with the applied field along the c- and a-axes. For H‖c the temperature dependence of the FLL structural phase transition from square to hexagonal symmetry was investigated. Above 10 K the transition onset field. H 2(T), rises sharply, bending away from H c2(T) in contradiction to theoretical predictions of the two merging. For H‖a a first order FLL reorientation transition is observed at H tr=3–3.5 kOe. Below H tr the FLL nearest neighbor direction is parallel to the b-axis, and above H tr to the c-axis. This transition cannot be explained using nonlocal corrections to the London model.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
For a review see P C Canfield, P L Gammel and D J Bishop, Phys. Today 51(10) 40 (1998)
V G Kogan et al, Phys. Rev. B55, R8693 (1997); Phys. Rev. Lett. 79, 741 (1997)
U Yaron et al, Nature 382, 236 (1996)
M Yethiraj et al, Phys. Rev. Lett. 78, 4849 (1997)
M R Eskildsen et al, Phys. Rev. Lett. 78, 1968 (1997); 79, 487 (1997)
K O Cheon et al, Phys. Rev. B58, 6463 (1998)
P L Gammel et al, Phys. Rev. Lett. 82, 4082 (1999)
M R Eskildsen et al, Phys. Rev. Lett. 86, 320 (2001)
M R Eskildsen et al, Phys. Rev. Lett. 86, 5148 (2001)
Y DeWilde et al, Phys. Rev. Lett. 78, 4273 (1997)
B Rosenstein et al, Phys. Rev. Lett. 83, 844 (1999)
A Gurevich and V G Kogan, Phys. Rev. Lett. 87, 177009 (2001)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Eskildsen, M., Abrahamsen, A., Gammel, P. et al. Flux line lattice symmetries in the borocarbide superconductor LuNi2B2C. Pramana - J Phys 58, 903–905 (2002). https://doi.org/10.1007/s12043-002-0192-3
Issue Date:
DOI: https://doi.org/10.1007/s12043-002-0192-3