Itinerant electron magnetism in the Mo4 tetrahedral cluster compounds GaMo4S8, GaMo4Se8, and GaMo4Se4Te4 |
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| Authors: | A K Rastogi A Berton J Chaussy R Tournier M Potel R Chevrel M Sergent |
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| Affiliation: | 1. Centre de Recherches sur les Très Basses Températures, CNRS, Laboratoire associé à l'Université Scientifique et Médicale de Grenoble, Grenoble, France
2. Laboratoire de Chimie Minérale B, Laboratoire associé CNRS no. 254, Université de Rennes I, Rennes, France
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| Abstract: | The specific heat and magnetic properties of GaMo4X8 (X=S, Se, SeTe) between 1.4 and 290 K are reported. Our measurements tend to demonstrate that these compounds have a very high density of states, leading to a Stoner magnetic instability of conduction electrons at low temperatures. The linear temperature-dependent term in the specific heat is enhanced by electron-phonon coupling and spin fluctuation effects. These compounds could indicate an electron-phonon contribution to the Stoner enhancement factor. |
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