Theory of a structural phase transition of SrTiO3at 110 K
- 1 June 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 17 (11) , 4363-4367
- https://doi.org/10.1103/physrevb.17.4363
Abstract
The microscopic mechanism of the phase transition of SrTi at 110 K is discussed in terms of Kristoffel's electronic band model of the structural phase transition. The lowering of the valence-state energy with phonon excitation is calculated including the Sr-O interaction. It is demonstrated that the lowering of the valence-electron energy is larger than the short-range elastic energy of phonon excitation.
Keywords
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