Enhanced critical currents of superconducting erni2b2c in the ferromagnetically ordered state

P. L. Gammel; B. Barber; D. Lopez; A. P. Ramirez; D. J. Bishop; S. L. Bud’ko; P. C. Canfield

doi:10.1103/PhysRevLett.84.2497

Enhanced critical currents of superconducting erni₂b₂c in the ferromagnetically ordered state

P. L. Gammel, B. Barber, D. Lopez, A. P. Ramirez, D. J. Bishop, S. L. Bud’ko, P. C. Canfield

Electrical Engineering

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55 Scopus citations

Abstract

We report on transport and magnetization studies of the critical current in single crystal ErNi₂B₂C for applied fields below 4 kG. Below T≈2.5 K superconductivity coexists with weak ferromagnetism. We find that the critical currents are strongly enhanced for all field orientations in this ferromagnetic regime, corresponding to a threefold increase of the pinning force of the flux line lattice. We speculate that this increase is due to strong pair breaking by the ferromagnetism.

Original language	English (US)
Pages (from-to)	2497-2500
Number of pages	4
Journal	Physical review letters
Volume	84
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.84.2497
State	Published - 2000

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.84.2497

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abstract = "We report on transport and magnetization studies of the critical current in single crystal ErNi2B2C for applied fields below 4 kG. Below T≈2.5 K superconductivity coexists with weak ferromagnetism. We find that the critical currents are strongly enhanced for all field orientations in this ferromagnetic regime, corresponding to a threefold increase of the pinning force of the flux line lattice. We speculate that this increase is due to strong pair breaking by the ferromagnetism.",

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T1 - Enhanced critical currents of superconducting erni2b2c in the ferromagnetically ordered state

AU - Gammel, P. L.

AU - Barber, B.

AU - Lopez, D.

AU - Ramirez, A. P.

AU - Bishop, D. J.

AU - Bud’ko, S. L.

AU - Canfield, P. C.

PY - 2000

Y1 - 2000

N2 - We report on transport and magnetization studies of the critical current in single crystal ErNi2B2C for applied fields below 4 kG. Below T≈2.5 K superconductivity coexists with weak ferromagnetism. We find that the critical currents are strongly enhanced for all field orientations in this ferromagnetic regime, corresponding to a threefold increase of the pinning force of the flux line lattice. We speculate that this increase is due to strong pair breaking by the ferromagnetism.

AB - We report on transport and magnetization studies of the critical current in single crystal ErNi2B2C for applied fields below 4 kG. Below T≈2.5 K superconductivity coexists with weak ferromagnetism. We find that the critical currents are strongly enhanced for all field orientations in this ferromagnetic regime, corresponding to a threefold increase of the pinning force of the flux line lattice. We speculate that this increase is due to strong pair breaking by the ferromagnetism.

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Enhanced critical currents of superconducting erni₂b₂c in the ferromagnetically ordered state

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