Transport Property of an Organic Conductor α-(BEDT-TTF)_2I_3 under High Pressure : Discovery of a Novel Type of Conductor : Condensed Matter: Electronic Properties, etc.
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概要
- 論文の詳細を見る
We have found quite a new type of transport phenomenon in an organic crystal α-(BEDT-TTF)_2I_3 under high pressure. Essentially, it is a semimetal or a narrow gap semiconductor. But, the transport property is peculiar. The conductivity of this the carrier (hole) density and mobility change by a about 6 orders of magnitude. They change in a manner so that the effects just cancel out giving rise to the temperature independent conductivity. At low temperatures, the system is in a state with high mobility (3×10^5 cm^2/V・sec) and low carrier density (5×10^<15>cm^<-3>). This state has been found to be very sensitive to magnetic field. We propose a mechanism for the extremely strong temperature dependence of the carrier density. It is base on the band structure and takes the thermal effect into consideration.
- 社団法人日本物理学会の論文
- 2000-02-15
著者
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NISHIO Yutaka
Department of Physics, Faculty of Science, Toho University
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KAJITA Koji
Department of Physics, Faculty of Science, Toho University
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Nishio Y
Department Of Physics Faculty Of Science Toho University
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Nishio Yutaka
Department Of Chemistry Faculty Of Science Toho University
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IYE Yasuhiro
Institute for Solid State Physics, University of Tokyo
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Koyama K
Institute For Solid State Physics University Of Tokyo
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Iye Yasuhiro
Institute For Solid State Physics The University Of Tokyo
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Tamura Masafumi
Department of Chemistry, Faculty of Science, The University of Tokyo
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Kajita Koji
Department Of Physics Faculty Of Science Toho University
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TAJIMA Naoya
Department of Orthopaedic Surgery, Miyazaki Medical College
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Tamura Masafumi
Department Of Chemistry Faculty Of Science The University Of Tokyo
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Tamura Masafumi
Condensed Molecular Materials Lab. Riken
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Tajima N
Riken (the Institute Of Physical And Chemical Research)
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Tajima Naoya
Department Of Orthopaedic Surgery Miyazaki Medical College
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Koyama Keiichi
Tohoku Univ. Sendai Jpn
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Nishio Y
Osaka Univ. Toyonaka
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Koyama Keiichi
High Field Laboratory For Superconducting Materials Institute For Materials Research Tohoku Universi
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Nishio Y
Toho Univ. Chiba
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Nishino Yutaka
Department of Physics,Toho University
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Nishino Yutaka
Department of Physics, Faculty of Science, Toho University
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Koyama Keiichi
Department of Physics, Faculty of Science, Toho University
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Tamura Masafumi
Condensed Molecular Materials Lab., RIKEN
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