|일시||5월 17일(화), 11:00 ~ 12:00|
|연사||방준혁 박사(Korea Basic Science Institute, KBSI)|
Electronic excited states are quite common in nature and several applications, and the understanding and controlling of excited carrier dynamics is of fundamental and practical importance. Recent developments in time-dependent density functional theory (TDDFT)-molecular dynamics (MD) make it possible to explore excited carrier dynamics and its coupling with lattice dynamics on a femtosecond time scale. In this talk, I will present several recent studies on this subject, including the carrier multiplication induced non-thermal phase transition in phase change memory materials, the charge transfer dynamics in van der Waals heterostructures, the carrier induced transient defect formation and non-radiative recombination in semiconductors, and the photo-desorption of hydrogen on graphene.