Transition-state-theory-based Interpretation of Landau Double Well Potential for Ferroelectrics

Md Nur K. Alam,S. Clima,B. Kaczer,Ph. Roussel,B. Truijen, L. - A. Ragnarsson,N. Horiguchi,M. Heyns,J. Van Houdt

arXiv (Cornell University)（2024）

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Abstract

Existence of quasi-static negative capacitance (QSNC) was proposed from aninterpretation of the widely accepted Landau model of ferroelectrics. However,many works showed not to support the QSNC theory, making it controversial. Inthis letter we show the Landau model when used together withtransition-state-theory, can connect various models including first-principles,Landau, Preisach and nucleation limited switching while it does not predict theexistence of QSNC.

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Key words

Ferroelectricity,Phase Transitions,Thin Film Ferroelectrics,Dielectric Properties,Ferroelectric Materials

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