2007 Fiscal Year Final Research Report Summary
Preparation of Prototype THz Device and Synthesis of Nanostrucured Excitonic Room Temperature Superconductor
| Project/Area Number |
18560314
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Nihon University |
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Principal Investigator |
YAMAMOTO Hiroshi Nihon University, College of Sci. & Technol., Professor (90130632)
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| Co-Investigator(Kenkyū-buntansha) |
IWATA Nobuyuki Nihon University, College of Sci. & Technol., Lecturer (20328686)
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| Project Period (FY) |
2006 – 2007
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| Keywords | Room Temperature Superconductor / Nanostructure / Exciton / Tela Hz / Ultrathin Interface |
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| Research Abstract |
Little and Ginzburg propose low dimensional transport systems by excitons as a model of a room temperature superconductivity. In the models, the candidate of conductive layer (the main chain) for the 2-dimensional system is a metal. Since the shielding length of the exciton in metals may be in the order of nm, the metal layer must be ultrathin and continuous. The dielectric layer (the side chain) must have enough high energy and interactions with electrons.
We have studied the electrical conduction properties of the self-assembly monolayer of the C_<60>-O-C_8SH derivatives (C_<60>-SAM) (as dielectric layer) on Au ultrathin films (as conductive layer) as the model materials for an excitonic superconductor. When using the metal mask, electrodes were made by RF magnetron sputtering, sputtered Au atoms passed around behind the holes of the mask. After removing the mask Au ultrathin films were deposited by RF magnetron sputtering. The specimen was soaked in a 0.01mM benzene solution of C_<60> derivatives for 20 h at room temperature. The resistance decreased linearly from room temperature to 125K, and the gradient became steep lower than 125K. The unusual conductive behavior was observed only in the specimen which has an electrode distance less than 10 μm.
We concluded that the above anomalous transport properties may be caused by the influence of excitonic interactions between free electrons in the metal and electric dipoles excited in the molecules.
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[Journal Article] Carbon nanotube growth with dipped FeMo and FePt nanoparticle catalsts by chemical bapor deposition method2007
Author(s)
D., Ishizuka, T., Sonomura, H., Okuyama, N., Iwata, H., Yamamoto
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Journal Title
IEICE Technical Report, CPM2007-113 Vol. 107, No. 325
Pages: 49-53
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Development of Photo-Assisted Polymerization Process for Fullerenes2007
Author(s)
H.,Yamamoto, N., Iwata, S., Ando, R., Nokariya, Y.,Iio
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Journal Title
IEICE Technical Report, OME2007-48 Vol. 107, No. 307
Pages: 1-5
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Carbon Nanotube Growth with Dipped (Fe,Co) Mo Catalysts by Chemical Vapor Deposition2008
Author(s)
D., Ishizuka, T., Yanai, H., Okuyama, K., Uchida, N., Iwata, H., Yajima, H., Yamamoto
Organizer
34th Fullerene and Nanotube Symposium
Place of Presentation
Meijyo University
Year and Date
20080303-05
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Carbon Nanotube Growth with Dipped (Fe,Co) Pt Catalysts by Chemical Vapor Deposition2008
Author(s)
T., Sonomura, D., Ishizuka, H., Okuyama, N., Iwata, H., Yamamoto
Organizer
34th Fullerene and Nanotube Symposium
Place of Presentation
Meijyo University
Year and Date
20080303-05
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Fabrication of Carbon Nanofiber Emitter for Field Emission Display2007
Author(s)
S., Ide, K., Onuki, M., Yoshikuni, N., Iwata, H., Yamamoto
Organizer
The 18th Academic Symposium of MRS-J
Place of Presentation
College of Sci. & Technol., Nihon Univ
Year and Date
20071208-11
Description
「研究成果報告書概要(欧文)」より
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[Presentation] R. Nokariya, Y. Iio, T. Kato, T. Yamakoshi, S. Ando, N. Iwata, H. Yamamoto Synthesis of C_<60> Polymer Film using Free Electron Laser Irradiation during C_<60> Deposition2007
Author(s)
R., Nokariya, Y., Iio, T., Kato, T., Yamakoshi, S., Ando, N., Iwata, H., Yamamoto
Organizer
The 18th Academic Symposium of MRS-J
Place of Presentation
College of Sci. & Technol., Nihon Univ
Year and Date
20071208-11
Description
「研究成果報告書概要(欧文)」より
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[Presentation] フラーレン光重合プロセスの開発2007
Author(s)
山本, 岩田, 安藤, 野苅家, 飯尾
Organizer
電子情報通信学会(有機エレクトロニクス研究会)
Place of Presentation
新潟大学工学部
Year and Date
2007-11-09
Description
「研究成果報告書概要(和文)」より
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