Interwoven magnetic and flux line structures in single crystal (Tm,Er)Ni2B2C (invited)

P. L. Gammel, D. Lopez, D. J. Bishop, M. R. Eskildsen, N. H. Andersen, K. Mortensen, I. R. Fisher, K. O. Cheon, P. C. Canfield

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


We review studies of the interactions between magnetic order and the flux line lattice (FLL) in the (RE)Ni2B2C intermetallic borocarbides for (RE)=Tm and Er using small angle neutron scattering (SANS) and magneto-transport. For (RE)=Tm the magnetic order and the FLL assume a common symmetry, sharing a phase transition at ∼2 kOe, despite an order of magnitude difference in periodicity. For (RE)=Er, the penetration depth λ and the coherence length ξ, both of which are derived from the FLL form factor, are modified near TN=6 K by a theoretically predicted weakly divergent pairbreaking. Finally, below 2.3 K, (RE)=Er shows a coexistence of weak ferromagnetism and superconductivity. This state reveals a highly disordered FLL and a striking increase in the critical current, both arising from the strong ferromagnetic pairbreaking.

Original languageEnglish (US)
Pages (from-to)5544-5548
Number of pages5
JournalJournal of Applied Physics
Issue number9 II
StatePublished - May 2000
Event44th Annual Conference on Magnetism and Magnetic Materials - San Jose, CA, United States
Duration: Nov 15 1999Nov 18 1999

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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