Low Temperature Magnetoresistance of Iodine-Doped Polyacetylene in Metal-Nonmetal Transition Region
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概要
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Highly conductive heavily iodine-doped polyacetylene changes from metallic to nonmetallic by room-temperature aging. For this change, thermoelectric power varies little, suggesting that the transition is not ascribed to change in carrier concentration but to increase of the degrees of disorder. Corresponding to the transition, low temperature magnetoresistance changes from negative to positive on crossing the transition. The magnetoresistance in the metallic region is interpreted in terms of weak localization, while that in the nonmetallic state is explained by field effect to variable range hopping conduction among Anderson localization states. The transition to the nonmetallic state proceeds inhomogeneously.
- 社団法人日本物理学会の論文
- 1993-10-15
著者
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KANEKO HIROSHI
Department of Internal Medicine, Division of General Medicine, Aichi Medical University School of Me
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Takahashi A
Snp Research Center The Institute Of Physical And Chemical Research (riken)
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ISHIGURO Takehiko
Department of Physics,Kyoto University
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Takahashi Akio
Polymers Research Laboratories, Toray Industries Inc.
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Tsukamoto Jun
Polymers Research Laboratories, Toray Industries Inc.
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Ishiguro Takehiko
Department Of Electronics Faculty Of Engineering Kyoto University
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Ishiguro Takehiko
Physics Department Kyoto University:crest Jst
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Tsukamoto J
Polymers Research Laboratories Toray Industries Inc.
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Takizawa T
Department Of Physics Gunma University
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Ishiguro T
Department Of Physics Graduate School Of Science Kyoto University:crest Japan Science And Technology
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KANEKO HIROSHI
Fourth Department of Internal Medicine, Aichi Medical University
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Kaneko H
Toyama Univ. Toyama
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ISHIGAURO Takehiko
Electrotechnical Laboratory
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Kaneko Hiroshi
Department Of Applied Physics Faculty Of Engineering Tohoku University
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