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タイトル
和文:Electron Transport Properties of Au, Ag, and Cu Atomic Contacts in a Hydrogen Environment 
英文:Electron Transport Properties of Au, Ag, and Cu Atomic Contacts in a Hydrogen Environment 
著者
和文: 中住友香, 金子哲, 木口学.  
英文: T. Nakazumi, S. Kaneko, M. Kiguchi.  
言語 English 
掲載誌/書名
和文:The Journal of Physical Chemistry C 
英文:The Journal of Physical Chemistry C 
巻, 号, ページ Vol. 118    No. 14    pp. 7489–7493
出版年月 2014年3月 
出版者
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英文: 
会議名称
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開催地
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英文: 
公式リンク https://pubs.acs.org/doi/abs/10.1021/jp5012318
 
DOI https://doi.org/10.1021/jp5012318
アブストラクト This study investigates the electron transport properties of Au, Ag and Cu atomic contacts in a hydrogen environment at 10 K, by using the mechanically controllable break junction (MCBJ) technique. A sharp 0.2 G0 (2e2/h) peak was observed in the conductance histogram of H2/Cu contacts, whereas a low conductance tail (<1 G0) was observed with H2/Au contacts. The conductance behavior of the Ag contacts was found not to change by the introduction of hydrogen, thus, indicating a weak interaction between hydrogen and Ag atomic contacts. The atomic configuration of the H2/Cu and H2/Au contacts was further investigated using differential conductance (dI/dV) spectra and statistical analysis of the length of the atomic contacts. This revealed that a single hydrogen molecule is bridged between the Au electrodes via hydrogen-decorated Au chains, while a single hydrogen molecule bridges the Cu electrodes directly. The atomic configuration of the contacts explained the appearance of a sharp 0.2 G0 peak in the conductance histogram of the H2/Cu contacts.

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