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Mode selective excitation of terahertz vibrations in single crystalline rubrene

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dc.contributor.author Yano, Keisuke
dc.contributor.author Katsuki, Hiroyuki
dc.contributor.author Yanagi, Hisao
dc.date.accessioned 2019-02-22T04:41:47Z
dc.date.available 2019-02-22T04:41:47Z
dc.date.issued 2019-02-06
dc.identifier.issn 0021-9606
dc.identifier.uri http://hdl.handle.net/10061/13122
dc.description 出版社許諾条件により、本文は2020年2月6日以降に公開 ja_JP
dc.description.abstract Organic molecular crystals have a variety of low frequency vibrational modes composed of intra- and inter-molecular oscillations. They are mixed intricately in the terahertz (THz) region. We are interested in the controllability of the vibrational energy distribution among such THz vibrational modes based on the femtosecond double-pulse excitation scheme. Single crystalline rubrene is prepared by physical vapor transport. The optical response of vibrational modes in the electric ground state of rubrene is detected by the ultrafast pump-probe reflectivity measurement at 90 K. Three oscillation modes at 3.20, 3.67, and 4.18 THz are detected, and we demonstrate selective enhancement and depletion of each mode by properly tuning the double-pulse delay. The amplitude of the selected vibrational mode is modulated between 0.149 and 1.87, where 1.0 corresponds to the amplitude excited with a single pump pulse. The double-pulse delay dependence of the observed vibrational amplitude is simulated based on the classical driven harmonic oscillator model, and the results reasonably reproduce our experimental signals. Such selective manipulation of the vibrational amplitude can be a potential tool to investigate the vibronic and electron-phonon couplings which plays an important role for the charge transport characteristics and various optoelectronic properties in organic molecular crystals. ja_JP
dc.language.iso en ja_JP
dc.publisher American Institute of Physics ja_JP
dc.rights @2019 Author(s). ja_JP
dc.title Mode selective excitation of terahertz vibrations in single crystalline rubrene ja_JP
dc.type.nii Journal Article ja_JP
dc.contributor.transcription カツキ, ヒロユキ
dc.contributor.transcription ヤナギ, ヒサオ
dc.contributor.alternative 香月, 浩之
dc.contributor.alternative 柳, 久雄
dc.identifier.fulltexturl https://doi.org/10.1063/1.5068732 ja_JP
dc.textversion publisher ja_JP
dc.identifier.ncid AA00694991 ja_JP
dc.identifier.jtitle The Journal of Chemical Physics ja_JP
dc.identifier.volume 150 ja_JP
dc.identifier.issue 5 ja_JP
dc.relation.doi info:doi/10.1063/1.5068732 ja_JP
dc.identifier.artnum 054503 ja_JP
dc.identifier.NAIST-ID 73298986 ja_JP
dc.identifier.NAIST-ID 73293383 ja_JP
dc.relation.pmid 30736674 ja_JP

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