Weak magnetism phenomena in heavy-fermion superconductors: selected $μ$SR studies

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dc.creatorAmato, A.
dc.creatorGraf, M. J.
dc.creatorde Visser, A.
dc.creatorAmitsuka, H.
dc.creatorAndreica, D.
dc.creatorSchenck, A.
dc.date2004-08-16
dc.date.accessioned2026-07-07T02:59:46Z
dc.date.available2026-07-07T02:59:46Z
dc.descriptionThe behavior of the so-called weak moment antiferromagnetic states, observed in the heavy-fermion superconductors UPt$_3$ and URu$_2$Si$_2$, is discussed in view of recent $μ$SR results obtained as function of control parameters like chemical substitution and external pressure. In UPt$_3$, the Pd substitution for Pt reveals the dynamical character of the weak moment order. On the other hand, $μ$SR measurements performed on samples in which Th substitutes U suggest that crystallographic disorder on the magnetic sites deeply affects the fluctuation timescale. In URu$_2$Si$_2$, a phase separation between the so-called hidden order state, present at ambient pressure, and an antiferromagnetic state, occurring under pressure, is observed. In view of the pressure-temperature phase diagram obtained by $μ$SR, it is deduced that the respective order parameters have different symmetries.
dc.descriptionTo appear in: J. Phys.: Cond. Matter
dc.identifierhttps://arxiv.org/abs/cond-mat/0408350
dc.identifierhttp://arxiv.org/abs/cond-mat/0408350
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24644
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleWeak magnetism phenomena in heavy-fermion superconductors: selected $μ$SR studies
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