Electron correlations on a mesoscopic scale: Magnetic properties of transition metal telluride cluster compounds

T. T.M. Palstra*, M. L. Steigerwald, A. P. Ramirez, Y. U. Kwon, S. M. Stuczynski, L. F. Schneemeyer, J. V. Waszczak, J. Zaanen

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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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.

Original languageEnglish
Pages (from-to)1768-1771
Number of pages4
JournalPhysical review letters
Volume71
Issue number11
DOIs
Publication statusPublished - 1 Jan 1993
Externally publishedYes

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