CAREER: Towards an Atomic Scale Understanding of Spin Polarized Electron Transport

这个CAREER项目解决了基础材料科学问题，以在原子水平上推进对材料和材料界面中自旋极化电子传输的理解。利用电子自旋的半导体器件将有可能实现比传统器件更高的速度，而功耗更低。本研究的目的是了解温度、材料和材料界面性质对自旋翻转和自旋依赖散射的作用。最终目标是开发一个知识库，使开发高效自旋注入和半导体基自旋电子器件的检测方法成为可能。该方法利用两种基于扫描隧道显微镜的技术来定量和标记缺陷类型，以原子分辨率评估散射机制。原位分子束外延将用于材料合成和界面制备。该项目涉及电子材料科学中具有技术相关性的基础研究问题。这项研究将与一个强大的教育组成部分一起进行，即开发一个综合讲座实验课程，该课程利用无线听众反应系统来立即确定学生的理解程度。响应系统将允许每个学生以私人方式参与并与教师交流。此外，该研究项目将为学生提供在研究生和本科生学习中使用最先进的科学设备的实践机会，并扩大奥尔巴尼大学与当地K-12学校的外展计划。***

This CAREER project addresses fundamental materials science issues to advance understanding of spin polarized electron transport through materials and material interfaces at an atomic level. Semiconductor devices which utilize the spin of the electron will have potential to achieve higher speeds, with lower power consumption than conventional devices. The objectives of this research are to understand the role of temperature, materials, and material interface properties on both spin-flip and spin-dependent scattering. The ultimate goal is to develop a knowledge base that enables the development of high efficiency spin injection and detection methods for semiconduc-tor based spintronic devices. The approach utilizes two scanning tunneling microscopy based techniques for quantification and tagging of defect type to assess scattering mechanisms with atomic resolution. In situ molecular beam epitaxy will be utilized for material synthesis and inter-face preparation. %%% The project addresses fundamental research issues in electronic materials science having technological relevance. This research will be conducted in tandem with a strong educational component that develops an integrated lecture laboratory course, which utilizes a wireless audi-ence response system to immediately ascertain student comprehension. The response system will allow every student to participate and communicate with the instructor in a private manner. In addition, the research project will provide opportunities for students to work with state-of-the-art scientific equipment in a hands-on manner for both graduate and undergraduate studies as well as augmenting the University at Albany's outreach programs with local K-12 schools.***