Effect of superconductivity on the cubic to tetragonal structural transition due to a two-fold degenerate electronic band |
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| Authors: | SK Ghatak BC Khanra DK Ray |
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| Institution: | Saha Institute of Nuclear Physics, Calcutta 700000, India;Laboratoire Louis Néel, C.N.R.S. 166 X, 38042 Grenoble-Cedex, France |
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| Abstract: | The effect of the BCS superconductivity on the cubic to tetragonal structural transition arising from a two-fold degenerate electronic band is investigated within the mean field approximation. The phase diagram of the two transitions is given for a half filled eg-band. Modification of the two transitions when they are close together are also discussed. |
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