Charge dynamics of two-dimensional electron gases at surfaces and interfaces

表面和界面处二维电子气的电荷动力学

• 批准号: 155997689
• 负责人: Professor Dr. Andrei Pimenov
• 金额: --
• 依托单位: Institut für Festkörperphysik
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/155997689?language=en
• 关键词: Charge; dynamics; two; dimensional; electron

This project is devoted to the investigations of dynamical conductivity of two-dimensional electron gases induced by metal adsorbates on semiconductor surfaces and in oxide-oxide interfaces. The experiments will be carried out in the terahertz frequency range (100 -1000 GHz) and with temperature and magnetic field as external parameters. In order to improve the sensitivity of the terahertz technique to the surface layers we intend to develop resonator-based methods for terahertz frequencies. Finally, an ultrahigh vacuum chamber for THz spectroscopy in transmission geometry will be constructed and adapted to the joint surface preparation UHV system in order to carry out in situ experiments.

本计画致力于研究金属吸附物在半导体表面及氧化物-氧化物界面所产生的二维电子气的动态电导率。实验将在太赫兹频率范围（100 - 1000 GHz）内进行，温度和磁场作为外部参数。为了提高太赫兹技术对表面层的灵敏度，我们打算开发基于谐振器的太赫兹频率的方法。最后，我们将搭建一个用于透射式太赫兹光谱的真空室，并将其与联合表面制备超高真空系统相匹配，以进行现场实验。