Theory of Raman Scattering with Nonlinear Excitations in a Continuum Model of trans-Polyacetylene
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概要
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The first order Raman scattering processes due to phonons are considered in a continuum model for t -(CH). when there is a nonlinear excitation as a soliton or apolaron. The formulation by Ono and Ito is generalized to incorporate the amplitudemode formalism, proposed by Horovitz and later developed further by Mete andHicks. The transition amplitudes are calculated for the two states, one with a solitonand the other with a polaron. Difference Raman spectra between these states and theperfectly dimerized state have three prominent dips due to bleaching of extended op-tical phonons. There is one small peak at the lower shift frequency side of each dipfor the soliton. The intensity of the peak is about one tenth of the dip for the systemwith one soliton over 100 lattice sites. The difference spectrum between the states withand without a polaron has two or three small peaks at the lower shift frequency side.If these small peaks are observable, we should be able to determine whether thephotoconduction is carried out by solitons or polarons.
- 社団法人日本物理学会の論文
- 1989-10-15
著者
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ONO Yoshiyuki
Department of Physics,Toho University
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Wada Yasushi
Department Of Physics University Of Tokyo : Tohoku University Of Art And Design
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Wada Yasushi
Department Of Physics University Of Tokyo:institute For Theoretical Physics University Of California
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Ono Yoshiyuki
Faculty Of Science Toho University
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Wada Y
Tohoku University Of Art And Design
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Wada Yasushi
Department Of Physics University Of Tokyo
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TERAI Akira
Department of Physics,Kitasato University
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Wada Yasuhiro
Department Of Materials Science Faculty Of Science Hiroshima University
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Terai A
Osaka City Univ. Osaka
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Ono Yoshiyuki
Department Of Physicis Toho University
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Terai Akira
Department Of Applied Physics Osaka City University
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WADA Yasushi
Tohoku University of Art and Design
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Wada Yasushi
Department of Materials Science,Faculty of Science,Hiroshima University
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Ono Yoshiyuki
Department of Physics,University of Tokyo
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Terai Akira
Kyoto Institute of Technology
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