| Автор | S A Hayward |
| Автор | E K H Salje |
| Дата выпуска | 1998-02-16 |
| dc.description | At low temperatures, the behaviour of structural phase transitions is modified by the influence of quantum fluctuations. Such fluctuations enhance the stability of the high-symmetry phase, reducing the observed transition temperature. The effect on phase diagrams of temperature versus some other control parameter (e.g. pressure or chemical composition) is described. A simple low-temperature extension of Landau theory is used, where the extent of quantum mechanical effects is characterized by a saturation temperature . The theory is used to model the phase diagrams of the mineral anorthoclase , the ferroelectric materials ( for the 20 K transition), and SbSI . The saturation temperature is related to the extent to which changes in the hard phonon modes influence the transition mechanism. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Low-temperature phase diagrams: non-linearities due to quantum mechanical saturation of order parameters |
| Тип | paper |
| DOI | 10.1088/0953-8984/10/6/025 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 10 |
| Первая страница | 1421 |
| Последняя страница | 1430 |
| Аффилиация | S A Hayward; Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK |
| Аффилиация | E K H Salje; Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK |
| Выпуск | 6 |
