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Terahertz sum-frequency excitation of coherent optical phonons in the two-dimensional semiconductor WSe2 Editor’s Pick
http://hdl.handle.net/10131/0002000919
http://hdl.handle.net/10131/00020009190a822118-41a8-4d96-bbc8-b48c9b3dd78d
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
APL23-AR-12342.pdf (1.7 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||
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| 公開日 | 2024-05-17 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| タイトル | Terahertz sum-frequency excitation of coherent optical phonons in the two-dimensional semiconductor WSe2 Editor’s Pick | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 言語 | ||||||||||||||||||
| 言語 | eng | |||||||||||||||||
| 資源タイプ | ||||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||
| 資源タイプ | journal article | |||||||||||||||||
| アクセス権 | ||||||||||||||||||
| アクセス権 | open access | |||||||||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||||||||
| 著者 |
Kusaba, Satoshi
× Kusaba, Satoshi
ORCID
0000-0002-5313-4817
× Lin, Haw-Wei
ORCID
0000-0002-5208-7385
× Tamaki, Ryo
× Katayama, Ikufumi
ORCID
0000-0001-6788-7732
× Takeda, Jun
ORCID
0000-0002-1197-6821
× Blake, A., Geoffrey
ORCID
0000-0003-0787-1610
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| 抄録 | ||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||
| 内容記述 | Driving fundamental excitations via strong light fields is one of the most important issues in solid state physics, which opens up new avenues to control material properties. Two-dimensional materials are fruitful platforms for future semiconductor applications, including opto-electronic and phononic devices, yet the phonon dynamics and nonlinear phonon–phonon coupling remain under-explored. Here, we demonstrate coherent phonon excitation in thin films of the layered two-dimensional semiconductor WSe2 induced by intense and broadband ultrafast terahertz (THz) pulses. We performed THz Kerr effect spectroscopy and observed coherent phonon oscillations assigned to the E2g optical phonon mode. The phonon amplitude displays a quadratic THz field strength dependence, indicating a sum-frequency THz excitation process. Furthermore, pump–probe polarization and crystal orientation relationships, supported by symmetry analysis of the nonlinear susceptibility and Raman tensors, provide helpful insight into nonlinear phonon–phonon interactions and potential coherent control schemes for the manipulation of phonon polarization and material properties in WSe2. | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 書誌情報 |
en : Applied Physics Letters 巻 124, 号 12, 発行日 2024-03-18 |
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| 収録物識別子タイプ | EISSN | |||||||||||||||||
| 収録物識別子 | 10773118 | |||||||||||||||||
| 書誌レコードID | ||||||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||||||
| 収録物識別子 | AA00543431 | |||||||||||||||||
| DOI | ||||||||||||||||||
| 関連タイプ | isVersionOf | |||||||||||||||||
| 識別子タイプ | DOI | |||||||||||||||||
| 関連識別子 | https://doi.org/10.1063/5.0191558 | |||||||||||||||||
| 権利 | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 権利情報Resource | https://publishing.aip.org/resources/researchers/rights-and-permissions/sharing-content-online/ | |||||||||||||||||
| 権利情報 | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Applied Physics Letters and may be found at https://doi.org/10.1063/5.0191558 . | |||||||||||||||||
| 著者版フラグ | ||||||||||||||||||
| 出版タイプ | AM | |||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||||||||
| 出版者 | ||||||||||||||||||
| 出版者 | American Institute of Physics | |||||||||||||||||
| 言語 | en | |||||||||||||||||
