Phonon soft modes and para- to ferro-electric phase transitions

Jian-Sheng Wang

Physica A: Statistical Mechanics and its Applications, 2021, vol. 566, issue C

Abstract: 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 BaTiO3 for phase transition from para- to ferro-electric phase.

Keywords: Effective phonon; Soft mode; BaTiO3 (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:566:y:2021:i:c:s0378437120309390

DOI: 10.1016/j.physa.2020.125641

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