CAREER: Structural Studies of Metal Interfaces on High-Index Silicon Surfaces

9733398巴斯基这个职业项目致力于金属-半导体界面的基础表面科学方面的研究。贵金属的生长行为将在高折射率(倾斜的)硅表面提供的独特模板上进行检测。这些界面的结构和电子性质将用扫描隧道显微镜(STM)结合第一性原理和电子结构计算来研究。这种方法有望使原子结构模型的发展和对这些界面的形成和性质有更深的了解。这项研究的动机是最近对清洁的(001)到(111)之间的高折射率表面的STM研究，揭示了在更知名的低折射率表面上不存在的独特的行状结构。预计潜在的硅结构将导致金属覆盖层在纳米尺度上形成新的结构(例如纳米线)。此项目的补充教学部分侧重于以微积分为基础的物理序列入门课程的开发。这个为期三个学期的实验将引入计算机接口实验和更有效地整合授课内容。其目的是提供坚实的材料物理基础，特别是培养学生的实验和分析技能。%该项目致力于具有高度技术相关性的材料科学主题领域的前沿研究问题。这项研究将在基础水平上为电子材料和器件的重要方面贡献基本的材料科学知识。该计划的一个重要特点是强调教育，并通过在一个具有根本和技术意义的研究领域对学生进行培训，将研究与教育相结合。***

9733398 Baski This CAREER project addresses fundamental surface science aspects of metal-semiconductor interfaces. The growth behavior of noble metals will be examined on unique templates provided by high-index ("tilted") silicon surfaces. The structural and electronic properties of these interfaces will be studied using scanning tunneling microscopy (STM) in conjunction with first-principles, electronic-structure calculations. This approach is expected to enable the development of atomic structural models and a deeper understanding of the formation and properties of these interfaces. The research is motivated by recent STM investigations of clean high-index surfaces oriented between (001) and (111) that have revealed unique row-like structures which do not exist on the more well-known low-index surfaces. It is anticipated that the underlying Si structure will cause metal overlayers to form novel structures on the nanometer scale (e.g. nanowires). A complementary teaching component of this project focuses on course development in an introductory calculus-based physics sequence. Labs for this three-semester sequence will introduce computer-interfaced experiments and more effective integration of lecture components. The aim is to provide a firm foundation in materials physics, and especially to develop studentsO experimental and analytical skills. %%% The project addresses forefront research issues in a topical area of materials science having high technological relevance. The research will contribute basic materials science knowledge at a fundamental level to important aspects of electronic materials and devices, in general. An important feature of the program is the emphasis on education, and on the integration of research and education through the training of students in a fundamentally and technologically significant research area. ***