119Sn solid-state NMR as a local probe for correlations in CeRu4Sn6

CeRu4Sn6 is a tetragonal ternary compound which develops strong correlations at low temperatures. NMR investigations on the nuclei are reported for the first time. The Knight shift at magnetic fields of about 1.8T is relatively small (-0.33%) and no significant temperature dependence could be resolv...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2006-05, Vol.378-380, p.839-840
Main Authors: Bruning, E M, Baenitz, M, Gippius, A A, Paschen, S, Strydom, A M, Steglich, F
Format: Article
Language:English
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Summary:CeRu4Sn6 is a tetragonal ternary compound which develops strong correlations at low temperatures. NMR investigations on the nuclei are reported for the first time. The Knight shift at magnetic fields of about 1.8T is relatively small (-0.33%) and no significant temperature dependence could be resolved. The behavior of the spin-lattice relaxation rate at temperatures above approximately 20K is consistent with a small gap semiconductor (). At lower temperatures shows an increase towards weaker T-dependence. This is interpreted as the formation of strong correlations around and is consistent with specific heat results in the framework of the Korringa model. Furthermore, measurements on the isostructural reference compound LaRu4Sn6 are presented.
ISSN:0921-4526
DOI:10.1016/j.physb.2006.01.308