The linear and nonlinear dielectric susceptibilities in the incommensurate phase

被引:13
|
作者
Iwata, M [1 ]
Kuok, MH
Orihara, H
Ishibashi, Y
机构
[1] Nagoya Univ, Fac Engn, Dept Appl Phys, Nagoya, Aichi 4648603, Japan
[2] Natl Univ Singapore, Dept Phys, Singapore 117548, Singapore
关键词
nonlinear dielectric constant; modulated structure; incommensurate; soft mode; Landau theory;
D O I
10.1080/00150199808015034
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The linear and nonlinear dielectric susceptibilities in the incommensurate phase for which the thermodynamic potential includes no Lifshitz invariant has been calculated within the single wave approximation. It has turned out that the amplitude mode in the incommensurate phase can be detected by measuring the third-order nonlinear dielectric susceptibility.
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页码:163 / 170
页数:8
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