Stationary Anharmonic Gap Modes in the Diatomic Toda Lattice
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概要
- 論文の詳細を見る
Numerical experiments and a theoretical study are made for the diatomic Toda lattice equation to show the existence of stationary nonlinear gap modes. The characteristic properties of the nonlinear localized mode obtained numerically and analytically using the rotating-wave approximation are : (1) It arises from the soft anharmonicity of an effective potential for the Toda lattice. (2) Its central position is located at the site of a lighter atom. (3) Its eigenfrequency is splitted from the bottom of the optic frequency band. (4) The gap mode profile is composed of two parts, a localized s-like vibrational mode and a lattice distortion. (5) For not too large anharmonicity, there exists a simple relationship between a shift function and an envelope function representing the lattice distortion and the vibrational amplitude, respectively.
- 社団法人日本物理学会の論文
- 1995-03-15
著者
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AOKI Masanori
School of Health Science, Kanazawa University
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Takeno Shozo
Laboratory of Physics, Faculty of Engineering and Design, Kyoto Institute of Technology
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Aoki M
School Of Allied Medical Professions Kanazawa University
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Takeno Shozo
Laboratory Of Physics Faculty Of Engineering And Design Kyoto Institute Of Technology
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Aoki Masanori
School Of Allied Medical Professions Kanazawa University
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