Magneto-optical Study of Zinc-Selenide/Zinc-Iron-Selenide Quantum Wells; A System with Magnetically Tuned Confinement

本研究是关于硒化锌/硒化锌的研究。 硒化铁量子阱结构与硒化锌铁 用分子束生长的高质量外延层 环氧（MBE）技术。 这些结构具有不寻常的 性质，即空穴限制是由外部 外加磁场 这种情况导致了一部小说 关于不同类型的激子的情况， 在稀磁半导体中从未观察到。 的 硒化锌/硒化锌铁体系提供了独特的 有机会调整量子阱的潜力和控制 使用外部磁场的载流子限制。 磁- 反射率和磁致发光光谱测量 将探索该系统的参数空间（层 厚度、铁浓度、威尔斯数）以及 依赖于温度和磁场。 这些磁- 光学研究也将扩展到掺杂系统。

This research is concerned with studies of zinc-selenide/zinc- iron-selenide quantum well structres and zinc-iron-selenide epilayers of high quality which have been grown by molecular beam epotaxy (MBE) technique. These structures have the unusual property that the hole confinement is determined by an externally applied magnetic field. This situation leads to a novel situation concerning the different types of excitons which has never been observed in a dilute magnetic semiconductor. The zinc-selenide/zinc-iron-selenide system offers a unique opportunity to tune the quantum well potential and control the carrier confinement using an external magnetic field. Magneto- reflectance and magneto-luminescence spectroscopy measurements will be made exploring the parameter space of this system (layer thickness, iron concentration, number of wells) as well as the dependence on temperature and magnetic field. These magneto- optical studies will also be extended to doped systems.