Acquisition of a High-Field Magnet Optical Cryostat for Magneto-Electro-Optics

磁电光学是电场干扰磁光效应和磁场干扰电光效应的光学研究的一个新领域。磁性半导体及其超晶格中的许多基本磁光效应需要大磁场来解析弱磁化稀磁性材料中的光谱特征。该项目为普渡大学提供资金，用于购买一台9特斯拉横场光学低温恒温器，用于半导体、超导体和磁性氧化物中磁电光效应的固态研究。高磁场将使人们能够接触到目前无法接触到的新物理现象。该仪器将由三名首席研究员和他们的学生进行四个独立但相关的研究项目。高场低温恒温器是研究法拉第效应、沃伊特效应和激子塞曼效应，特别是研究饱和特性所必需的。普渡大学在磁性半导体方面有着巨大的发展和制造设施，将完全支持研究需求。

Magneto-electro-optics represents a new facet of optical investigations in which electric fields perturb magneto- optic effects and magnetic fields perturb electro-optic effects. Many fundamental magneto-optic effects in magnetic semiconductors and their superlattices require large magnetic fields to resolve spectroscopic features in dilute magnetic materials with weak magnetization. This project provides funds to Purdue University for the purchase of a 9 Tesla transverse-field optical cryostat for solid-state research on magneto-electro-optic effects in semiconductors, superconductors and magnetic oxides. The high magnetic field will allow access to new physical phenomena that are currently inaccessible. The apparatus will be used by three principal investigators and their students engaged in four independent, but related, research projects. The high-field cryostat is necessary for studies of Faraday Effect, Voigt Effect and Excitonic Zeeman Effect, especially with respect to saturation features. Purdue University has a strong effort in magnetic semiconductors with substantial growth and fabrication facilities that would fully support the research needs.