Band Jahn-Teller type structural transition in La3?xS4 compounds |
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| Authors: | DK Ray K Westerholt S Methfessel SK Ghatak |
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| Institution: | Ruhr-Universität Bochum, Exp. Phys. IV, 4630 Bochum, W.-Germany;I.I.T., Kharagpur-2, India |
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| Abstract: | La-chalcogenides La3S4 in pure state or with small number of vacancies at La-sites undergo cubic to tetragonal structural transition which can be explained on the basis of a band Jahn-Teller model. Some characteristics of band Jahn-Teller transition associated with a two-fold degenerate band are discussed on the background of the recent experimental results on La3?xS4 compounds. |
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