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E. Brüning, M. Baenitz, A. Gippius, S. Paschen, A.M. Strydom, F. Steglich:
"¹¹⁹Sn solid-state NMR as a local probe for correlations in CeRu₄Sn₆";
Physica B: Condensed Matter, 378-380 (2006), 839 - 840.

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

E.M. Brüning a,M. Baenitz a, A.A. Gippius b, S. Paschen a, A.M. Strydom c and F. Steglich a

a Max-Planck-Institute for Chemical Physics of Solids, Dresden, Germany
b Faculty of Physics, Moscow State University, Moscow, Russia
c Department of Physics APK, University of Johannesburg, South Africa

Abstract
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 1.8 T 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 20 K 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.

Keywords: Nuclear magnetic resonance; Knight shift; Spin-lattice relaxation

Nuclear magnetic resonance; Knight shift; Spin-lattice relaxation

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC06588172

http://dx.doi.org/10.1016/j.physb.2006.01.308