Electron-phonon interactions in MoS2ﾠprobed with ultrafast two-dimensional visible/far-infrared spectroscopy

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dc.citation.articleNumber212447en_US
dc.citation.issueNumber21en_US
dc.citation.journalTitleThe Journal of Chemical Physicsen_US
dc.citation.volumeNumber142en_US
dc.contributor.authorGuo, Xunminen_US
dc.contributor.authorChen, Hailongen_US
dc.contributor.authorWen, Xiewenen_US
dc.contributor.authorZheng, Junrongen_US
dc.date.accessioned2017-06-05T17:33:45Zen_US
dc.date.available2017-06-05T17:33:45Zen_US
dc.date.issued2015en_US
dc.description.abstractAn ultrafast two-dimensional visible/far-IR spectroscopy based on the IR/THz air biased coherent detection method and scanning the excitation frequencies is developed. The method allows the responses in the far-IR region caused by various electronic excitations in molecular or material systems to be observed in real time. Using the technique, the relaxation dynamics of the photo-excited carriers and electron/phonon coupling in bulk MoS2 are investigated. It is found that the photo-generation of excited carriers occurs within two hundred fs and the relaxation of the carriers is tens of ps. The electron-phonon coupling between the excitations of electrons and the phonon mode E1u of MoS2 is also directly observed. The electron excitation shifts the frequency of the phonon mode 9 cm−1 higher, resulting in an absorption peak at 391 cm−1 and a bleaching peak at 382 cm−1. The frequency shift diminishes with the relaxation of the carriers.en_US
dc.identifier.citationGuo, Xunmin, Chen, Hailong, Wen, Xiewen, et al.. "Electron-phonon interactions in MoS2ﾠprobed with ultrafast two-dimensional visible/far-infrared spectroscopy." <i>The Journal of Chemical Physics,</i> 142, no. 21 (2015) AIP Publishing LLC.: http://dx.doi.org/10.1063/1.4921573.en_US
dc.identifier.doihttp://dx.doi.org/10.1063/1.4921573en_US
dc.identifier.urihttps://hdl.handle.net/1911/94770en_US
dc.language.isoengen_US
dc.publisherAIP Publishing LLC.en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleElectron-phonon interactions in MoS2ﾠprobed with ultrafast two-dimensional visible/far-infrared spectroscopyen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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