Effect of Substitutional Impurities on the Neutral-to-Ionic Phase Transition in TTF-p-Chloranil Crystal
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概要
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In order to investigate the effect of doping on the neutral-to-tonic phase transi-tion, reflection spectra due to the intramolecular excitations have been measuredon TTF-7>-chloranil single crystals doped with the substitutional weak acceptdr,trichloro-p-benzoquinone, at various temperatures and dopant concentrations.The thermal shifts of the spectra are considerably blurred by doping in contrastwith a sharp spectral change at I.=84K in pure crystal. It is concluded thatthe phase transition in doped crystals occurs inhomogeneously due to a binaryphase separation into quasi-tonic and quasi-neutral regions even below T.. Onthe basis of these results, a microscopic model is presented for the effect of lm-purities on the neutral-to-ionic phase transition in TTF-chloranil crystal.
- 社団法人日本物理学会の論文
- 1984-12-15
著者
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TOKURA Yoshinori
Department of Applied Physics, University of Tokyo
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KODA Takao
Department of Mathematics and Physics, Faculty of Science, Japan Women's University
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Tokura Yoshinori
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo
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Mitani T
Japan Advanced Institute Of Science And Technology
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Mitani Tadaoki
Institute For Molecular Science
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Mitani T
The School Of Materials Science Japan Advanced Institute Of Science And Technology
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Mitani T
Japan Advanced Inst. Sci. And Technol. Ishikawa Jpn
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SAITO Gunzi
Institute for Solid State Physics,The University of Tokyo
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Koda Takao
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo
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Mitani Tadaoki
The School Of Materials Science Japan Advanced Institute Of Science And Technology
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Saito Gunzi
Institute For Molecular Science:institute For Solid State Physics University Of Tokyo
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Tokura Yoshinori
Department Of Applied Physics And Quantum Phase Electronics Center University Of Tokyo
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SAITO Gunzi
Institute for Molecular Science
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