Theoretical study of time-resolved photoemission spectroscopy for low-dimensional electron-phonon system

低维电子声子系统时间分辨光电子能谱理论研究

• 批准号: 21740222
• 负责人: LEE JaeDong
• 金额: $ 2.5万
• 依托单位: Japan Advanced Institute of Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740222/
• 关键词: 光物性; 超高速現象; 時間分解光電子分光; グラファイト; 電子・格子カップリング; ディラックフェルミオン; ブリュアンゾーンK点とH点; 光誘起超高速動力学; 非放射緩和; 光誘起絶縁体金属転移; コヒーレントフォノン; 電荷秩序の融解; 1次元有機絶縁体; バンドミキシング

Time-resolved photoemission spectroscopy (TRPES) is the state-of-the-art spectroscopy technology which makes it possible to monitor the real-time change of the electronic structure (especially, near the Fermi level) under the optical excitation. It is a challenge not only in experiment but also in theory in a sense that its theoretical formulation is still lacking. Through developing our original formulation, we theoretically study TRPES in 1-imensional organic insulator, and graphite, quasi 2-dimensional gapless semiconductor. Novel microscopic understanding about the effects of ultrafast dynamics of electron and phonon on the underlying electronic structure could be made.

时间分辨光发射光谱（TRPE）是最新的光谱技术，它使得在光激发下可以监视电子结构（尤其是在费米水平接近费米水平）的实时变化。这不仅是实验中的挑战，而且从理论上讲，它仍然缺乏理论表述。通过开发我们的原始配方，我们从理论上研究了1级有机绝缘子和石墨，准2维无间隙半导体。可以对电子和声子对基础电子结构的超快动力学的影响进行新的微观理解。