Electron Correlations On a Mesoscopic Scale: Magnetic Properties of Transition Metal Telluride Cluster Compounds
We report the magnetic properties of a new class of materials: Ni9Te6n+ and Co6Te8n+ with n=0, 1, 2. These cluster compounds, which can be charged by chemical means from neutral to 2+, provide a unique and novel way to change the Fermi level. For most charge states we observe quenching of the spin and orbital moments at low temperatures, accompanied by a large value for the temperature independent susceptibility of the ground state. The generic presence of low-energy magnetic excitations in these compounds indicates that these systems exhibit strong electron correlations and form mesoscopic analogs of the mixed-valence heavy-fermion compounds.
MSU Digital Commons Citation
Palstra, T. T.M.; Steigerwald, Michael L.; Ramirez, A. P.; Kwon, Y. U.; Stuczynski, S. M.; Schneemeyer, Lynn; Waszczak, Joseph V.; and Zaanen, J., "Electron Correlations On a Mesoscopic Scale: Magnetic Properties of Transition Metal Telluride Cluster Compounds" (1993). Department of Chemistry and Biochemistry Faculty Scholarship and Creative Works. 519.