2014 Fiscal Year Final Research Report
First-principles calculations for femto/atto-second electron dynamics in solids
| Project/Area Number |
23340113
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Mathematical physics/Fundamental condensed matter physics
|
|---|
| Research Institution | University of Tsukuba |
|---|
Principal Investigator |
|
|---|
| Research Collaborator |
OTOBE Tomohito 日本原子力研究開発機構, 関西光科学研究所, 研究副主幹 (60421442)
|
|---|
| Project Period (FY) |
2011-04-01 – 2015-03-31
|
| Keywords | 時間依存密度汎関数理論 / レーザー科学 / マルチスケールシミュレーション / アト秒科学 / 超高速現象 |
|---|
| Outline of Final Research Achievements |
We have developed first-principles computational methods to describe interactions between light pulses and materials based on time-dependent density functional theory. We have also developed a novel multi-scale simulation method combining dynamics of electrons and electromagnetic fields of light, and have succeeded to establish a theoretical basis to describe wide varieties of phenomena relevant to light-matter interactions. As interactions between extreme light pulses and solids, we have analyzed phenomena such as coherent phonon generations, ultrafast changes of dielectric properties, ultrafast electric currents which appear in transparent materials, variations in time of band gap of semiconductors, and the threshold and depth of ablations induced by femtosecond laser pulses.
|
| Free Research Field |
計算物質科学
|
