A Note on the Condensation of a Mode R Following the Condensation of a Soft Mode Q When R Couples with Q Merely in the Form Q^2 R^2
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Previously the author described that when the soft mode system consists of a non-degenerate mode alone, there should always occur only one ferroic space groupin the transition sequence. Let Q and R denote the coordinates of this soft modeand some other mode, respectively. Certain physicists suspect that the authoroverlooked the possibility that, on continuous cooling, a lower ferroic symmetrymay additionally arise from the condensation of R induced by the increase ofQ.? through the coupling Q'R' in the free energy function. In the present paperthe author explains his committing no such fault and validity of the previousdescription from the viewpoint of a heterophone transition sequence.
- 社団法人日本物理学会の論文
- 1977-04-15
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