The 1st RAP Edge Photonics Seminar
開催概要
| 題目 | Unravelling the nature of excitons and their close cousins in momentum space |
|---|---|
| 講師 | Prof. Keshav M. DANI, Okinawa Institute of Science and Technology (OIST) |
| 開催日 | 2026年5月25日（月） |
| 開催時間 | 16:00〜17:00 |
| 会場 | 理化学研究所 和光地区 研究交流棟 W524-525（オンライン参加可） |
| 発表言語 | 英語 |
| 参加費 | 無料 |
| お問い合わせ | |
| 詳細情報 | The 1st RAP Edge Photonics Seminar |
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要旨
Excitons are the primary optical excitations in semiconductors and insulators. They are critical in understanding the optical response of a variety of materials and devices. In 2D materials, due to the strong Coulomb interaction, excitons dominate the optical properties even at room temperature. Since their discover in the 1930s, experimental studies on excitons have largely used optical methods, and thus been unable to access their momentum coordinates and related information. Recently, it became possible to measure the momentum coordinate distribution of the internal electron and hole that constitute the exciton, thus revealing rich physics about the exciton and their close cousins [1, 2, 3, 4, 5, 6]
In this talk, I will present the latest results in my lab in studying the momentum coordinate of excitons and other related particles.
[1] J. Madeo, M.K.L. Man et al., Science 370, 1199 (2020)
[2] M.K.L. Man, J. Madeo, et al. Science Advances 7(17), eabg0192 (2021)
[3] O. Karni, E. Barre, V. Pareek, et al. Nature 603, 247 (2022)
[4] O. Karni, I. Esin and K.M. Dani, Adv. Materials 35(27), 2204120 (2023)
[5] Z. Zhu, D.R. Bacon, V.Pareek, et al. Nature Comm. 16, 6385 (2025)
[6] V Pareek, D.R. Bacon, X.Zhu, et al. Nature Physics 22, 209 (2026)