Strong enhancement of the critical current at the antiferromagnetic transition in ErNi2B2C single crystals

M. Weigand, L. Civale, F. J. Baca, Jeehoon Kim, S. L. Bud'ko, P. C. Canfield, B. Maiorov
2013 Physical Review B  
We report on transport and magnetization measurements of the critical current density Jc in ErNi2B2C single crystals that show strongly enhanced vortex pinning at the Neel temperature TN and low applied fields. The height of the observed Jc peak decreases with increasing magnetic field in clear contrast with that of the peak effect found at the upper critical field. We also performed the first angular transport measurements of Jc ever conducted on this compound. They reveal the correlated
more » ... of this pinning enhancement, which we attribute to the formation of antiphase boundaries at TN.
doi:10.1103/physrevb.87.140506 fatcat:t2dwc2a4wvfxlkrflyvojycvhq