| Project/Area Number |
16605006
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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 |
計算科学
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| Research Institution | Osaka University |
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Principal Investigator |
HIROSE Kikuji Osaka University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (10073892)
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| Co-Investigator(Kenkyū-buntansha) |
GOTO Hidekazu Osaka University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (80170463)
INAGAKI Kouji Osaka University, Graduate School of Engineering, Assistant Professor, 大学院・工学研究科, 助手 (50273579)
ONO Tomoya Osaka University, Graduate School of Engineering, Assistant Professor, 大学院・工学研究科, 助手 (80335372)
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| Project Period (FY) |
2004 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 2005: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 2004: ¥2,000,000 (Direct Cost: ¥2,000,000)
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| Keywords | First-principles electronic structure calculation / Electron-conduction property / nanostructures / 第一原理電気伝導計算 / 量子化コンダクタンス |
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| Research Abstract |
Recently, the unique phenomena of ballistic electron transport through nanoscale junctions such as quantized conductance have been observed experimentally and theoretically. Future research on transport properties can be expected to lead to new discoveries of nanoscience and novel fabrications of electronic devices. In this study, we have developed first-principles computational program for electron conduction through nanostructures suspended between semi-infinite electrode using Wannier like functions. We have also found interesting result using newly developed program : Multishell helical gold nanowires (HGNs) suspended between semi-infinite electrodes are found to exhibit peculiar electron-conduction properties. Our results that the numbers of conduction channels in the HGNs and their conductances are smaller than those expected from a single-atom row nanowire verify the recent experiment. In addition, we obtained a more striking result that, in the cases of thin HGNs, distinct magnetic fields are induced by the electronic current helically flowing around the shells. This finding indicates that the HGNs can be good candidates for nanometer-scale solenoids.
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