Magnetic Field Effects on Neutron Diffraction in the Antiferromagnetic Phase of $UP{t}_3$

Abstract

We discuss possible magnetic structures in UPt${}_3$ based on our analysis of elastic neutron-scattering experiments in high magnetic fields at temperatures $T<T_N$. The existing experimental data can be explained by a single-{\bf q} antiferromagnetic structure with three independent domains. For modest in-plane spin-orbit interactions, the Zeeman coupling between the antiferromagnetic order parameter and the magnetic field induces a rotation of the magnetic moments, but not an adjustment of the propagation vector of the magnetic order. A triple-{\bf q} magnetic structure is also consistent with neutron experiments, but in general leads to a non-uniform magnetization in the crystal. New experiments could decide between these structures.

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References in corpus (2)

• The Order Parameter for the Superconducting Phases of UPt${}_3$
• Neutron-diffraction study of the evolution of antiferromagnetic order in UPt3 doped with Pd

Cited by in corpus (3)

• Antiferromagnetic Domains and Superconductivity in UPt3
• Reply to ``Comment on `Magnetic field effects on neutron diffraction in the antiferromagnetic phase of $UP{t}_3$'''
• Comment on "Magnetic field effects on neutron diffraction in the antiferromagnetic phase of UPt3"