Dielectric Properties and Carrier Dynamics in Bi_2Sr_2YCu_2O_<8+δ>(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
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概要
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The complex permittivity of lightly doped Bi_2Sr_2YCu_2O_<8+δ> was measured in order to investigate the carrier dynamics near the insulator-to-metal transition. By suppressing the extrinsic polarization due to some contact effects, we found a rapid rise in the c-axis dielectric constant ε'_c with increasing temperature at T_M〜225K. Below T_M, the thermally activated carrier movement seemed to be limited within the ab plane. We showed that the ε'_c behavior is related to a two-step carrier-conduction development observed in the polycrystalline sample. We also found anotherε'_c anomaly in its temperature dependence.
- 社団法人日本物理学会の論文
- 2007-04-15
著者
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Zheng Xu-guang
Department Of Electronics Faculty Of Engineering Kyushu University
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MAKI Makoto
Department of Health Sciences, Hokkaido University School of Medicine
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Naito Tomoyuki
School Of Health And Sport Sciences Osaka University
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Naito Tomoyuki
School Of Materials Science Jaist:(present Address)faculty Of Engineering Iwate University
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Maki Makoto
Department Of Physics Saga University
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Maki Makoto
Department Of Health Science Hokkaido University
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NAKAO Shun-ichi
Department of Physics, Saga University
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MACHIDA Koh-ichi
Department of Physics, Saga University
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SHIRAISHI Masashi
Department of Physics, Saga University
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IWASAKI Hideo
School of Materials Science, JAIST
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Zheng Xu-guang
Department Of Physics Saga University
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Shiraishi Masashi
Department Of Physics Saga University
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Shiraishi Masashi
Department Of Marine Bioscience Faculty Of Biotechnology Fukui Prefectural University
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Machida Koh-ichi
Department Of Physics Saga University
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Iwasaki Hideo
School Of Materials Science Jaist
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Nakao Shun-ichi
Department Of Physics Saga University
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