Anomalous Magnetism of UPT_{3}:

Details Anomalous Magnetism of UPT_{3}: Anomalous Magnetism of UPT_{3}:

1998-08-18

arxiv.org/abs/cond-mat/9808187v1

Physics

Condensed Matter

Strongly Correlated Electrons

9 Page, Latex, 4 figure, accepted by J. Phys. Soc. Jpn

Scientific paper

UPt${}_{3}$ exhibits a paradoxical behavior in its antiferromagnetism. Namely, the neutron scattering experiments surely detect the antifferomagnetic ordering below the transition temperature ${\rm T}_{N}\sim 5K$, while no trace of the transition is seen in the NMR experiments and in the specific heat at ${\rm T}_{N}$. For resolution of this paradox, we propose the ``SDW state'' which oscillates with a finite frequency larger than those of the NMR and smaller than those of the neutron scattering. For demonstrating such possibility we seek the divergent point of susceptibility, and offer a preliminary calculation of the frequency dependence of ``magnetization''.

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