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Influence of a magnetic field on the antiferromagnetic order in UPt_3

B. Lussier·L. Taillefer·W. J. L. Buyers·T. E. Mason·T. Petersen
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Abstract

A neutron diffraction experiment was performed to investigate the effect of a magnetic field on the antiferromagnetic order in the heavy fermion superconductor UPt_3. Our results show that a field in the basal plane of up to 3.2 Tesla, higher than H_c2(0), has no effect: it can neither select a domain nor rotate the moment. This has a direct impact on current theories for the superconducting phase diagram based on a coupling to the magnetic order.

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B. Lussier, L. Taillefer, W. J. L. Buyers, T. E. Mason, T. Petersen. 1996-06-19. Influence of a magnetic field on the antiferromagnetic order in UPt_3. https://doi.org/10.1103/physrevb.54.r6873

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