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Vortex pinning by magnetic order in ErNi2B2C

Publisher
AMERICAN PHYSICAL SOC
Publication Date
Keywords
  • Qc Physics
Disciplines
  • Physics

Abstract

We have used a miniature linear Hall probe array to make local magnetization measurements of the magnetic superconductor ErNi2B2C (Tc similar or equal to 10.8 K). We show the sharp onset of significant pinning effects in ErNi2B2C is coincident with the onset of an a-axis incommensurate ordering of the Er moments at T-a(m) similar or equal to 6 K, below T-c. The data presented provide further evidence that certain components of the magnetic order in (R)Ni2B2C materials interact with the vortex lattice and have a profound influence on the nonequilibrium (vortex pinning) properties of the superconducting state.

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