Polarons in flatland

该项目旨在产生新的理论激子(氢原子的固态类似物)在电荷掺杂原子薄半导体。迫切需要这样的理论来描述近年来出现的一系列新材料对外部探测器(如电场)的反应。其新奇之处在于将半导体的行为视为量子杂质问题，激子被周围的电子修饰，形成新类型的粒子。更好地了解2D材料中的杂质问题最终将促进它们在新兴技术中的使用，这些技术结合了电子学和光子学，用于超低功率设备，如光电探测器、LED和激光。

This project aims to generate new theories of excitons (the solid-state analogue of hydrogen atoms) in charge-doped atomically thin semiconductors. Such theories are urgently needed to describe the response to external probes, such as electric fields, of a range of novel materials that have emerged in recent years. The novelty is to treat the behaviour of semiconductors as a quantum impurity problem, where the excitons become modified by the surrounding electrons to form new types of particles. A greater understanding of the impurity problem in 2D materials would ultimately facilitate their use in emerging technologies that combine electronics with photonics, for use in ultra-low-power devices such as photodectectors, LEDs, and lasers.