Metal Insulator Transition in Doped Semiconductors: Far Infrared & Transport Studies

掺杂半导体中的金属绝缘体转变：远红外

• 批准号: 8704670
• 负责人: H. Dennis Drew
• 金额: $ 15.1万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-08-01 至 1991-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8704670&HistoricalAwards=false
• 关键词: Metal; Insulator; Transition; Doped; Semiconductors

The magnetic field induced metal insulator transition in doped semiconductors will be investigated by combined transport and far infrared spectroscopic measurements. The transport measurements will be used to determine the critical field for the metal insulator transition and to investigate interaction and weak localization effects in the metallic state and the activated conductance in the insulating state. The spectroscopic measurements will be used to investigate the electronic structure of the systems away from the Fermi energy. The transformation of the cyclotron resonance and spin resonance signals on the metallic state to the impurity transitions in the insulating state will be investigated. These studies are on materials of importance to high speed opto-electronics. This program is a collaborative effort between Professor Shayegan at Princeton Professor Drew at Maryland. These studies are on materials of high technological importance and related to high speed opto-electronics.

磁场诱导的金属绝缘体转变 半导体将通过联合运输和远距离运输来研究。 红外光谱测量 运输测量 将用于确定金属的临界场 绝缘体转变和研究相互作用和弱 金属态和活化态的局域化效应 绝缘状态下的电导。 光谱 测量将被用来研究电子结构 远离费米能的系统。 转变 回旋共振和自旋共振信号在 金属态到杂质态的过渡 国家将进行调查。 这些研究是关于 对高速光电子学的重要性。 这个程序是一个 普林斯顿大学的沙耶根教授 马里兰州的德鲁教授。 这些研究是关于具有高技术重要性的材料 并且涉及高速光电子学。