1997 Fiscal Year Final Research Report Summary
Electronic Properties of Carbon- and Nitrogen-Sustituted Nanotubes
| Project/Area Number |
07405039
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
工業物理化学
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
YAMABE Tokio Kyoto Univ.Mol.Eng.Professor, 工学研究科, 教授 (80025965)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIZAWA Kazunari Kyoto Univ.Mol.Eng.Assoc.Prof., 工学研究科, 助教授 (30273486)
MISAKI Yohji Kyoto Univ.Mol.Eng.Assoc.Professor, 工学研究科, 助教授 (90202340)
TANAKA Kazuyosi Kyoto Univ.Mol.Eng.Professor, 工学研究科, 教授 (90155119)
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| Project Period (FY) |
1995 – 1997
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| Keywords | Nanoelectronics / Carbon nanotubes / Molecular solenoid / Peierls transition / Superconductive transition / Electron spin resonance |
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| Research Abstract |
In this study, we have carried out characteristics of carbon- and nitrogen-substituted nanotubes. Results of this study (19995-1997) are described below.
(1)Although carbon nanotubes and polyacenes are theoretically expected to exhibit metallic properties, there is always a possibility of metal-insulator transition widely observed in one-dimensional systems. Thus, we predicted the electronic properties of carbon nanotubes and polyphenanthrenes. As a result we showed that there is a close correlation between the crystal orbitals near the Fermi level and the metallic properties.
(2)We purified using a heat-treatment method carbon nanotubes, and conducted electron spin resonance and SQUID measurements. Carbon nanotubes are shown to exhibit metallic properties just like graphite from these measurements.
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