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Non-linear dynamics of electromagnetic field and valley polarization in WSe$_2$ monolayer
https://repo.qst.go.jp/records/85321
https://repo.qst.go.jp/records/853213da1c2e2-6052-499a-b320-489c04e3135e
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-10-28 | |||||
| タイトル | ||||||
| タイトル | Non-linear dynamics of electromagnetic field and valley polarization in WSe$_2$ monolayer | |||||
| 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 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Hashmi, Arqum
× Hashmi, Arqum× Yamada , Shunsuke× Yamada, Atsushi× Kazuhiro, Yabana× Tomohito, Otobe× Hashmi, Arqum× Kazuhiro, Yabana× Tomohito, Otobe |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Linear and nonlinear optical response of WSe2 monolayer is investigated by Maxwell plus time-dependent Kohn-Sham (TDKS) equations with spin-orbit interaction. By applying the chiral resonant pulses the electron dynamics show the one-photon absorption process. WSe2 monolayer shows the linear optical response at the intensity I = 10 ^10 W/cm ^2 while a complex nonlinear behavior is observed at I = 10 ^12 W/cm ^2. By changing the chirality of the resonant light, a strong circular dichroic effect is observed in the excited state population. A relatively weak laser field shows effective valley polarization while an intense field induces spin-polarized carrier peak between K(K') and Γ-point via non-linear process. On the other hand, the intense laser show high harmonics up to the 11th order. Our results demonstrate that circularly polarized resonant pulse generate high harmonics in WSe _2 monolayer of order 3n±1. | |||||
| 書誌情報 |
Applied Physics Letters 巻 120, 号 5, p. 051108, 発行日 2022-02 |
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| 出版者 | ||||||
| 出版者 | American Institute of Physics | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0003-6951 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1063/5.0077235 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://aip.scitation.org/doi/10.1063/5.0077235 | |||||
