Speaker: Xiaoqin (Elaine) Li, University of Texas-Austin
Title: Optical properties of Semiconductor Moiré Crystals
Abstract: A new type of superlattice, known as the moiré superlattice, form when two monolayers of van der Waals materials are stacked to form a heterostructure. While the influence of moiré potential on electronic properties has been extensively studied, its influence on the optical properties of semiconductor heterostructures has just begun to be explored. I will discuss how the moiré potential changes the exciton resonances and diffusion in a manner controllable by the twist angle. These moiré crystals may find exciting applications in quantum information science as a scalable platform for solid-state single photon emitters and spin-photon interfaces.
Bio: Xiaoqin Li received her B.S degree from Beijing Normal University in 1997 and PhD in physics 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 and was promoted to full professor in 2018. 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 is a fellow of the American Physics Society.
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