研究・研究者
研究会・セミナー
| 演 題 | 「Photoinduced Switching to a Metallic Phase in One-Dimensional Mott Insulator: Qualitatively Different Aftermaths of Linearities and Nonlinearities」 |
|---|---|
| 日 時 | 2006年11月16日(木) 15:00 |
| 講演者 | Dr. JaeDong Lee（北陸先端大） |
| 場 所 | 分子研 南実験棟408号室 |
| 概 要 |
Based on the nonperturbative many-body time-dependent approach, the optical conductivity of the one-dimensional half-filled Hubbard model induced by the ultrashort laser (with its energy \omega_pu) is investigated. The photoinduced weights appear below the gap energy (E_g) and are attributed to the metallic weights. In particular, the nonlinear response in the resonant pumping (\omega_pu \simeq E_g) and the linear response in the off-resonant pumping (\omega_pu \gg E_g) imply two qualitatively different processes of the photoinduced insulator-metal transition, which is confirmed by the photoemission just after the ultrashort laser irradiation, i.e., the illuminated photoemission. |
| お問合せ先 | 米満賢治（理論分子科学研究系） |
