Electron Correlations On a Mesoscopic Scale: Magnetic Properties of Transition Metal Telluride Cluster Compounds

Authors

T. T.M. Palstra, University of TwenteFollow
Michael L. Steigerwald, Columbia UniversityFollow
A. P. Ramirez, LucentFollow
Y. U. Kwon, Lucent
S. M. Stuczynski, Lucent
Lynn Schneemeyer, Montclair State UniversityFollow
Joseph V. Waszczak, University of WashingtonFollow
J. Zaanen, Lucent

Document Type

Article

Publication Date

1-1-1993

Abstract

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.

DOI

10.1103/PhysRevLett.71.1768

Montclair State University 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.
https://digitalcommons.montclair.edu/chem-biochem-facpubs/519