Abstract
We report 121,123 Sb nuclear quadrupole resonance (NQR) measurements in the filled-skutterudite superconductor PrOs 4 Sb 12 in the temperature range of 0.05–30 K. The electric field gradients (EFG), V z z and V x x - V y y , at the Sb site exhibit unusual temperature dependence below 30 K. To explain these features, we discuss the coupling between the Sb nuclear quadrupole moment and Pr 4 f 2 -derived multipole moments. The observed T dependence of EFG is well explained by the CEF pseudo-quartet consisting of Γ 1 singlet and Γ 4 (2) triplet states in the cubic point group T h . These results, in turn, are indicative of the importance of the coupling between the 121,123 Sb quadrupole moments and the hexadecapole moment caused by the pseudo-quartet.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
