title: &mgr;(+) knight shift measurements in U0.965Th0.035Be13 single crystals
abstract: Muon spin rotation ( &mgr;SR) measurements of the temperature dependence of the &mgr;(+) Knight shift in single crystals of U0. 965Th0.035Be13 have been used to study the static spin susceptibility chi(s) below the transition temperatures T(c1) and T(c2). While an abrupt reduction of chi(s) with decreasing temperature is observed below T(c1), chi(s) does not change below T(c2) and remains at a value below the normal-state susceptibility chi(n). In the normal state we find an anomalous anisotropic temperature dependence of the transferred hyperfine coupling between the &mgr;(+) spin and the U 5f electrons.
authors.affiliation: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.initials: JE
authors.lastname: Sonier
authors.initials: RH
authors.lastname: Heffner
authors.initials: DE
authors.lastname: MacLaughlin
authors.initials: GJ
authors.lastname: Nieuwenhuys
authors.initials: O
authors.lastname: Bernal
authors.initials: R
authors.lastname: Movshovich
authors.initials: PG
authors.lastname: Pagliuso
authors.initials: J
authors.lastname: Cooley
authors.initials: JL
authors.lastname: Smith
authors.initials: JD
authors.lastname: Thompson