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PhysRevB.81.241408.pdf | 240.63 kB | Adobe PDF | 見る/開く |
タイトル: | Nonadiabatic coupling between C-O stretching and Pt substrate electrons enhanced by frustrated mode excitations |
著者: | Watanabe, Kazuya ![]() ![]() ![]() Inoue, Ken-ichi Nakai, Ikuyo F. Matsumoto, Yoshiyasu ![]() |
著者名の別形: | 渡邊, 一也 |
発行日: | Jun-2010 |
出版者: | American Physical Society |
誌名: | Physical Review B |
巻: | 81 |
号: | 24 |
論文番号: | 241408 |
抄録: | We report the transient enhancement of coupling between adsorbate internal stretching vibration and substrate electrons induced by femtosecond laser excitation. A Pt(111) surface covered with carbon monoxide (CO) is irradiated with a 150 fs pump pulse at 400 nm. Transient changes in the imaginary part of nonlinear susceptibility in the C-O stretching region are probed by using femtosecond time-resolved infrared-visible sum-frequency generation with phase-sensitive detection. The line shape of C-O stretching shows remarkable asymmetry due to Fano interference with a continuum of electron-hole pair excitation. Excitations of CO-Pt frustrated modes play a key role in the enhancement of the nonadiabatic coupling. |
著作権等: | © 2010 The American Physical Society |
URI: | http://hdl.handle.net/2433/128893 |
DOI(出版社版): | 10.1103/PhysRevB.81.241408 |
出現コレクション: | 学術雑誌掲載論文等 |

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