On the properties of the 1s-forms of TaSe2 and TaS2 |
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Authors: | W. Geertsma C. HaasR. Huisman F. Jellinek |
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Affiliation: | Laboratorium voor Anorganische Chemie, Materials Science Center of the University, Groningen, The Netherlands |
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Abstract: | The 1s-forms of TaSe2 and TaS2 with octahedral coordination of the metal are diamagnetic; 1s-TaS2 is a semiconductor at low temperature. The diamagnetism is explained by taking account of spin-orbit coupling which leads to a ground state with zero magnetic moment (g = 0). This spin-orbit coupling stabilizes the d1 configuration of the metal with respect to d2 + d0. Thus, it can be understood that 1s−TaS2 is semiconducting, while isostructural VSe2 is metallic. Similarly, BaTaS2 and BaTaSe3 are semiconductors, but BaVS3 is metallic. |
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