Studies of Faraday Rotation in n-cadmium Selenide

硒化镉中法拉第旋转的研究

• 批准号: 8715947
• 负责人: Myriam Sarachik
• 金额: --
• 依托单位: CUNY City College
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-01-15 至 1991-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8715947&HistoricalAwards=false
• 关键词: Studies; Faraday; Rotation; cadmium; Selenide

In collaboration with S. Geschwind of AT&T Bell Laboratories, magnetic properties will be investigated by measuring the Faraday rotation of Cadmium-Selenium, a direct band-gap semiconductor, with donor concentrations spanning the metal-insulator transition. Measurements will first be carried out at AT&T Bell Labs down to 1.2 Kelvin, and then extended to 20 millikelvin in magnetic fields at City College in a dilution refrigerator and magnet which are scheduled for delivery in 1988. The aim of these experiments is to understand the magnetic behavior near the metal-insulator transition, with particular emphasis on the strong temperature dependence of the susceptibility which has been observed for just-metallic samples, and which has been variously ascribed to electron correlations and/or the presence of magnetic moments on the metallic side of the transition.

与S合作。AT T贝尔实验室的Geschwind， 磁性能将通过测量法拉第 镉硒，一种直接带隙半导体， 施主浓度跨越金属-绝缘体 过渡 测量将首先在AT T贝尔进行 实验室下降到1.2开尔文，然后扩展到20 millikelvin， 城市学院稀释冰箱中的磁场， 磁铁，计划于1988年交付。 的目的 这些实验是为了了解附近的磁性行为 金属-绝缘体过渡，特别强调 磁化率的温度依赖性很强， 被观察到的只是金属样品，并已被 不同地归因于电子相关性和/或存在 在过渡金属一侧的磁矩。