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説明:

Optical atomic switches have garnered considerable interest due to its fast switching speed, low energy consumption, and compatibility with quantum information technologies. While atomic modulation via optical excitation has been demonstrated using scanning probe techniques, controlling atomic motion in operable devices remains a key challenge for practical applications. In this study, we operated an optical atomic switch and investigated molecular effects on conductance modulation. Single-molecule junctions incorporating C60, bipyridine, and butanediamine were fabricated using a mechanically controllable break junction technique. Photoirradiation induced conductance enhancement in all molecular junctions. Analysis of current–voltage characteristics in ON and OFF states revealed that atomic motion modulates the electronic coupling between the molecule and electrodes. A systematic comparison across different molecular junctions showed that molecular rigidity significantly influences optical conductance modulation, with flexible molecules like butanediamine exhibiting weaker dependence on initial conductance states.

権利情報:

• In Copyright
  

キーワード: Optical atomic switch, molecular junction

刊行年月日: 2025-12-10

出版者: Royal Society of Chemistry (RSC)

掲載誌:

• Journal of Materials Chemistry C (ISSN: 20507526) vol. 14 issue. 5 p. 1805-1810

研究助成金:

• Yazaki Memorial Foundation for Science and Technology
• Murata Science and Education Foundation
• Japan Society for the Promotion of Science 25K01740
• Japan Society for the Promotion of Science 21H01959

原稿種別: 査読前原稿 (Author's original)

MDR DOI: https://doi.org/10.48505/nims.6179

公開URL: https://doi.org/10.1039/d5tc03002a

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更新時刻: 2026-02-11 08:30:34 +0900

MDRでの公開時刻: 2026-02-10 18:03:02 +0900