Newly Preparation of Chaotic Low Dimensional Conducting System by Polymer C60 Ultrathin films and Application to Super-functional Electronic Devices

聚合物C60超薄膜混沌低维导电体系的新制备及其在超功能电子器件中的应用

• 批准号: 12650322
• 负责人: YAMAMOTO Hiroshi
• 金额: $ 2.11万
• 依托单位: Nihon University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650322/
• 关键词: C60 Derivatives; Self-Assembly Monolayer; Atomic Force Microscopy; MgO; Resistivity Anomaly; 室温超電導; 電子間力顕微鏡; 室温超伝導; C_<60>; 超薄膜; 低次元; エピタキシャル; 超伝導; FET; C60; 真空蒸着法; 2次元成長; 極微細ファイバー; AFM

The purpose of this work are the following:1) The synthesis of the novel 2-dimensional conducting system on the basis of the interaction between metals and π electrons by using the self-assembly monolayer formed on the Au ultrathin films.2) The investigation of the chaotic conducting system and the possibility of a room temperature superconductivity.As results of this work are the following:1) We have developed the new process to prepare the C60 derivative (C60-O-C8SH) self-assembly monolayer (C60-SAM) on Au ultrathin films/MgO(100)single crystal.2) By AFM observation we demonstrated that nano-scale Au ultrathin films were prepared along to the steps formed of the clear step and terrace structures were fabricated by optimization of the annealing conditions. The obtained samples, C60-SAM/Au/MgO were the materials system corresponding to the room temperature superconductor model proposed by Little and Ginzburg.3) In some of the obtained samples the resistivity anomaly was observed at about 200K, when the micro-scale electrodes were fabricated for the resistivity measurements.These obtained results revealed the possibility of the room temperature superconductivity which will be clarified by the refinement of the sample preparation process and/or the detailed measurements of the sample characterization.

1)利用在Au超薄膜上形成的自组装单分子膜，合成了基于金属与π电子相互作用的新型二维导电体系。2)混沌导电体系的研究及实现室温超导的可能性。本文的工作结果如下：1)利用原子力显微镜观察，我们在Au超薄膜/MgO(100)单晶上制备了C60衍生物(C60-O-C8SH)自组装单分子膜(C60-SAM)证明了纳米级Au超薄膜是沿着透明台阶形成的台阶生长的，并通过优化热处理条件制备出了阶梯状结构。得到的样品C60-SAM/Au/MgO是与Little和Ginzburg提出的室温超导模型相对应的材料体系。3)在一些样品中，当制作微尺度电极进行电阻率测量时，在200K左右观察到了电阻率异常。这些结果揭示了室温超导的可能性，这将通过样品制备工艺的改进和/或样品表征的详细测量来阐明。

项目成果

M.Ohkubo, K.Fukai, N.Iwata, H.Yamamoto: "Preparations of conductive ReO3 thin films"Superconductor Science and Technology (SuST). Vol.15,No.12. 1778-1780 (2002)

M.Ohkubo、K.Fukai、N.Iwata、H.Yamamoto：“导电 ReO3 薄膜的制备”超导科学与技术 (SuST)。

N.Iwata, N.Hashimoto, H.Yamamoto: "Preparation of Continuous C60 Thin Films with Flat Surfaces by Vacuum Evaporation"Trans.of the MRS-J. Vol.26,No.4. 1339-1342 (2001)

N.Iwata、N.Hashimoto、H.Yamamoto：“通过真空蒸发制备具有平坦表面的连续 C60 薄膜”Trans. of the MRS-J。

H.Yamamoto et al.: "Preparation of Self-Assembly Monolayer by C60 Derivatives"Trans. of the Materials Research Society of Japan. 25・2. 413-416 (2000)

H. Yamamoto 等人：“C60 衍生物的自组装单分子层的制备”，日本材料研究会 25・2（2000 年）。

H.Furusawa, K.Sakaguchi, T.Shimizu, T.Watanabe, H.Yamamoto, M.Chikamatsu, T.Kikuchi: "Preparation of Self-Assembly Monolayer by C60 Derivatives"Trans.of the MRS-J. Vol.25No.2. 413-416 (2000)

H.Furusawa、K.Sakaguchi、T.Shimizu、T.Watanabe、H.Yamamoto、M.Chikamatsu、T.Kikuchi：“用 C60 衍生物制备自组装单层”Trans. of the MRS-J。

N. Iwata, H. Okuyama, S. Kuroda, Y. Shimizu, H. Imai and H. Yamamoto: "Preparation of Continuous C60 Thin Films with Flat Surfaces by Vacuum Evaporation"Trans. of the MRS-J. Vol. 26, No. 4. 1339-1342 (2001)

N. Iwata、H. Okuyama、S. Kuroda、Y. Shimizu、H. Imai 和 H. Yamamoto：“通过真空蒸发制备具有平坦表面的连续 C60 薄膜”Trans。