Ferroelectricity and antiferromagnetism in multiferroic materials explained by photonic tunneling model

IF 1.3 4区 物理与天体物理 Q4 PHYSICS, CONDENSED MATTER
J. Koo, K. Lee
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引用次数: 2

Abstract

ABSTRACT Considering a photon field from its constituent electrons and ions, a photon correlation theory for ferroelectrics and antiferromagnetism is proposed. We calculate the spontaneous polarization which originates from a certain alignments of photon field in correlation with the specific phonon mode. Using the microscopic Hamiltonian we obtain the ferroelectric transition temperature, Tc and the antiferromagnetic transition temperature, TN in multiferroic materials. Tc and TN are given by same formula except different wavevector dependence originated from geometric difference between ferroelectrics and antiferromagnetism in multiferroics. The correlation between magnetic field and electric field on ferroelectrics and antiferromagnetism is considered to obtain the spontaneous polarization in good correspondence with experimental data.
用光子隧道模型解释多铁性材料中的铁电性和反铁磁性
摘要:考虑光子场的组成电子和离子,提出了铁电体和反铁磁性的光子相关理论。我们计算了与特定声子模式相关的光子场的一定排列所产生的自发极化。利用微观哈密顿量得到了多铁性材料的铁电转变温度Tc和反铁磁转变温度TN。除了在多铁体中由于铁电体和反铁磁性的几何差异导致的波向量依赖不同外,Tc和TN用相同的公式给出。考虑了铁电体和反铁磁性体上磁场和电场的相关性,得到了与实验数据吻合较好的自发极化。
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来源期刊
Ferroelectrics Letters Section
Ferroelectrics Letters Section 物理-物理:凝聚态物理
CiteScore
1.10
自引率
0.00%
发文量
1
审稿时长
4.8 months
期刊介绍: Ferroelectrics Letters is a separately published section of the international journal Ferroelectrics. Both sections publish theoretical, experimental and applied papers on ferroelectrics and related materials, including ferroelastics, ferroelectric ferromagnetics, electrooptics, piezoelectrics, pyroelectrics, nonlinear dielectrics, polymers and liquid crystals. Ferroelectrics Letters permits the rapid publication of important, quality, short original papers on the theory, synthesis, properties and applications of ferroelectrics and related materials.
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