Acquisition of an Ultra-High Vacuum System to House a Scanning Tunneling Microscope

用于扫描隧道的两个超高真空室 显微镜将建成。 该系统将包括一个阿里翁 轰击枪，精密机械手，装载锁定系统， 泵站和隔离台。 这些设备将 大大增强STM检查相关问题的能力 半导体表面和界面。 它将用于 研究计划包括以下主题：（一）原子 弛豫和表面电子结构，（ii）金属- 半导体界面，（iii）原子诱导的弛豫， 半导体表面和肖特基势垒形成，以及（iv） 半导体和绝缘体的外延生长，例如， 半导体异质结和氟化物 通过分子束外延生长的界面。

Two ultra-high-vacuum chambers for a scanning tunneling microscope will be constructed. The system will include an Arion bombardment gun, a precision manipulator, a load-lock system, pumping stations and an isolation table. The equipment will greatly enhance the power of the STM to examine problems relevant to semiconductor surfaces and interfaces. It will be used in a program of research including the following topics: (i) atomic relaxation and surface electronic structure, (ii) metal- semiconductor interfaces, (iii) adatom-induced relaxation of semiconductor surfaces and Schottky barrier formation, and (iv) epitaxial growth of semiconductors and insulators, e.g., semiconductor heterojunctions and semiconductor-fluoride interfaces grown by molecular-beam epitaxy.