Microscopic Theory of Optical Excitations in Interface-Dominated Material Systems (B04)

本项目研究界面主导半导体材料中电子-空穴对激发的微观模型。目标是分析光学线性和非线性响应以及空间非均匀激子的形成动力学，其中构成电子和空穴位于由内部界面分隔的邻近材料区域。作为模型系统，我们关注(i)半导体异质结构和（ii）由准二维过渡金属二硫族化合物层组成的范德-瓦尔斯键合系统。

This project deals with the microscopic modelling of electron-hole-pair excitations in interface dominated semiconductor materials. The goals are the analysis of the optically linear and nonlinear response and the formation dynamics of spatially inhomogeneous excitons where the constituting electrons and holes are located in neighbouring material regions that are separated by an internal interface. As model systems, we focus (i) on semiconductor heterostructures and (ii) van-der-Waals bonded systems consisting of quasi-two-dimensional layers of transition-metal dichalcogenides.