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タイトル
和文: 
英文:Role of dislocation movement in the electrical conductance of nanocontacts 
著者
和文: 石田忠, 角嶋邦之, 溝口 照康, 藤田博之.  
英文: Tadashi Ishida, Kuniyuki KAKUSHIMA, Teruyasu Mizoguchi, Hiroyuki Fujita.  
言語 English 
掲載誌/書名
和文: 
英文:Scientific Reports 
巻, 号, ページ Vol. 2       
出版年月 2012年9月3日 
出版者
和文: 
英文:Nature publishing group 
会議名称
和文: 
英文: 
開催地
和文: 
英文: 
DOI https://doi.org/10.1038/srep00623
アブストラクト Dislocation is a lattice imperfection of crystalline materials. Dislocation movement is induced during plastic deformation and influences the mechanical properties. Although the role of dislocation in mechanical properties has been well understood, the role of dislocation in electrical properties is completely lacking. Only Matthiessen's rule addresses the electrical influence of dislocations at the macroscale. Here, we show that the electrical conductance change due to dislocations and show their movements through in situ observation of a gold nanocontact. The density of the dislocations in the gold nanocontact did not affect the electrical conductance. The repeated and discrete dislocation movements resulted in an electrical conductance oscillation. Our results demonstrate how dislocations and their movements affect electric conductance at the nanoscale. This instability issue will cause a big problem for future electric devices such as ultra low power electric devices and nanowire photovoltaic devices.

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