Positive Muon Knight Shift Measurements in U_{0.965}Th_{0.035}Be_{13} Single Crystals

J. E. Sonier; R. H. Heffner; D. E. MacLaughlin; G. J. Nieuwenhuys; O. Bernal; R. Movshovich; P. G. Pagliuso; J. Cooley; J. L. Smith; J. D. Thompson

doi:10.1103/physrevlett.85.2821

arXiv · cond-mat/0003334

Positive Muon Knight Shift Measurements in U_{0.965}Th_{0.035}Be_{13} Single Crystals

J. E. Sonier·R. H. Heffner·D. E. MacLaughlin·G. J. Nieuwenhuys·O. Bernal·R. Movshovich·P. G. Pagliuso·J. Cooley·J. L. Smith·J. D. Thompson

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Abstract

Muon spin rotation measurements of the temperature dependence of the Knight shift in single crystals of U_{0.965}Th_{0.035}Be_{13} have been used to study the static spin susceptibility below the transition temperatures T_{c1} and T_{c2}. While an abrupt reduction of the susceptibility with decreasing temperature is observed below T_{c1}, the susceptibility does not change below T_{c2} and remains at a value below the normal-state susceptibility. In the normal state we find an anomalous anisotropic temperature dependence of the transferred hyperfine coupling between the muon spin and the U 5f-electrons.

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J. E. Sonier, R. H. Heffner, D. E. MacLaughlin, G. J. Nieuwenhuys, O. Bernal, R. Movshovich, P. G. Pagliuso, J. Cooley, J. L. Smith, J. D. Thompson. 2000-08-04. Positive Muon Knight Shift Measurements in U_{0.965}Th_{0.035}Be_{13} Single Crystals. https://doi.org/10.1103/physrevlett.85.2821

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