Flux pinning mechanisms in ErNi2B2C

S. S. James*, C. D. Dewhurst, S. B. Field, D. Mc K. Paul, Y. Paltiel, H. Shtrikman, E. Zeldov, A. M. Campbell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

We present local Hall probe measurements of the superconducting and magnetically ordered material ErNi2B2C (Tc≃ 10.5 K, TN≃6 K). The onset of incommensurate antiferromagnetic order at TN, within the superconducting state, results in an increase in vortex pinning for B∥c. For B⊥c no increase in pinning is observed at TN, consistent with the notion of vortex pinning by planar magnetic domain boundaries for B∥c. The development of a weak ferromagnetic component below Twf≃2.5 K results in a further increase in pinning for both orientations, suggesting that a different mechanism is responsible for this second increase at lower temperatures.

Original languageAmerican English
Article number092512
Pages (from-to)925121-925124
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number9
StatePublished - 1 Sep 2001
Externally publishedYes

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