Fundamental Excitons in Solids
Department of Physics, University of Texas Austin, USA
报告摘要:
Fundamental excitations (e.g. plasmons, excitons, phonons and magnons) determine both the equilibrium and non-equilibrium properties of solids such as metals, semiconductors, and magnetic materials. In this talk, I will give a few examples of our recent work on investigating how such fundamental excitations and particularly coupling between different types of excitations can be probed and controlled. In the first example, I will discuss how magnon and phonon non-equilibrium in a magnetic insulator driven by a temperature gradient leads to spin current. In the second example, I will discuss how coupling between excitons and surface plasmon polaritons can be used to sort and route valley polarized excitons in monolayer semiconductors.
报告人简介:
Xiaoqin Li received her B.S. in physics from Beijing Normal University in 1997 and her PhD in 2003 from University of Michigan. She was a postdoc fellow at JILA, Colorado from 2003-2006. She started as an assistant professor at UT-Austin in 2007. Prof. Li has received a number of awards including the Presidential Early Career Award for Scientists and Engineers in the U. S. and a Sloan Fellowship. She held a Humboldt Fellowship in 2015-2016 while she visited the Technical University of Berlin. She was elected a fellow of the American Physics Society in 2015.
邀请人:于国强
联系电话:82649215