论文标题
声子软模式和对铁电相的偏移
Phonon soft modes and para- to ferroelectric phase transitions
论文作者
论文摘要
在纪念Dietrich Stauffer教授的《 Physica A》特刊中，我首先回想起他在HLRZ的博士后一年的印象。在以下科学部分中，我讨论了具有四分之一非线性相互作用的软声子的理论。这适用于从para-到铁电相的相变的立方晶体Batio $ _3 $。
In this special issue of Physica A in memory of Professor Dietrich Stauffer, I first recall my impression on him while being his postdoc for a year at HLRZ. In the following scientific part, I discuss the theory of soft phonons with quartic nonlinear interactions. This is applied to the cubic crystal BaTiO$_3$ for phase transition from para- to ferroelectric phase.
