报告题目：Ultrafast time-resolve photoemission spectroscopy of solids and surfaces

报告人：Hrvoje Petek (University of Pittsburgh)

报告时间: 2019年3月5日（周二）下午4:00-5:00

报告地点: 物理学院新楼五楼多功能厅

Abstract:

Photoemission is the most general method for investigation of the electronic band structure of solids and solid surfaces. By performing time-resolved two-photon photoemission spectroscopy with femtosecond pump-probe pulses, we can also create excitations and follow their time evolution due the charge transfer, electron-electron, and electron-phonon interactions on femtosecond time scales. I will discuss the fundamental processes in metal surfaces that have been investigated in several groups in Japan, Germany, and the USA, including hot electron relaxation, surface state spectroscopy and lifetimes, adsorbate electronic spectroscopy and desorption dynamics, collective plasmon decay into single hot electrons, etc. I will finish with our recent work on coherent 2D photoelectron spectroscopy of multiphoton photoemission from metal surfaces.

邀请人：丰敏教授