主题：Seeing Electrons in Two Dimensions

嘉宾：Prof. Tony Heinz
      David M. Rickey Professor of Departments of Physics and Electrical Engineering Columbia University
 
时间：2014年10月16日（星期四），9:30 - 10:30 am
 
地点：东南大学化学化工楼 307室
 
嘉宾简介：Tony Heinz教授，哥伦比亚大学物理学系以及电子工程系终身教授，2001年获得David M. Rickey 冠名教授荣誉。加州大学伯克利分校博士学位，师从沈元壤教授。美国物理学会（APS）、美国光学学会（OSA）fellow。历任IBM 研究部门高级主管，美国光学学会2012年主席。
  Heinz教授的研究领域主要集中在非线性光学，超快激光光谱学，低维材料的电子、激子性质以及其动力学。在Nature, Science, PRL等刊物上发表论文超过200篇，拥有17个美国专利，H-index超过61。

主题摘要：
The past few years have witnessed a surge of activity in the study of graphene and, more recently, in other atomically thin two-dimensional materials.  We will describe some the reasons for the intense interest in these new material systems, highlighting their unusual electronic properties. We will show how we can use light to probe the distinctive properties electrons in model 2-D materials such as graphene and transition metal dichalcogenides. We will discuss the basics of light-matter interactions in these 2-D materials, as well as signatures of electron-electron and electron-phonon interactions in both spectral and femtosecond time-domain measurements.