Detection and Application of Embedded Degrees of Freedom in Nanoassembled Quantum Materials

纳米组装量子材料嵌入自由度的检测与应用

• 批准号: 0804402
• 负责人: Hari Manoharan
• 金额: $ 33万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0804402&HistoricalAwards=false
• 关键词: Detection; Application; Embedded; Degrees; Freedom

TechnicalThis project will apply atomic and molecular manipulation to the nanoscale assembly of novel quantum materials?materials whose structural and electronic properties are dominated by quantum mechanics and give rise to either novel behavior or promising technologies. The primary experimental apparatus for these investigations is a custom-built low-temperature scanning tunneling microscope capable of controlling matter at atomic length scales, operating at Stanford University. Model nanoscale materials will be assembled to target three quantum degrees of freedom that are playing increasingly vital roles in modern science and technology: the vibronic degree of freedom, quantum mechanical phase of electrons, and spin/pseudospin. For these studies, several operating modes of the apparatus will be exploited to perform studies within an environment comprised of ultra-high vacuum, low temperature of 4 K or below, and a high magnetic field up to 9 T. Controlled atom and molecule manipulation and atom-by-atom assembly of complex nanostructures are capabilities existing now only at the frontiers of science and technology. The students involved in this proposed research and education plan will receive a unique and cross-discipline training in emerging fields now universally identified as critical to society and the understanding of nature.Non-technicalIt is now possible to manipulate single atoms and molecules and piece together new materials truly ?from the bottom up.? This project will apply atom and molecule manipulation to assemble novel quantum materials?materials whose structural and electronic properties are dominated by quantum mechanics and give rise to either novel behavior or promising technologies. The primary experimental apparatus for these investigations is a unique and custom-built scanning tunneling microscope operating at Stanford University. Model nanoscale materials will be assembled to target three quantum degrees of freedom that are playing increasingly vital roles in modern science and technology: the vibronic degree of freedom (the ?shaking? of single chemical bonds), quantum mechanical phase of electrons (akin to the phase of traveling waves), and spin/pseudospin (the built-in magnetism of materials). Controlled atom and molecule manipulation and atom-by-atom assembly of complex nanostructures are capabilities existing now only at the frontiers of science and technology. The students involved in this proposed research and education plan will receive a unique and cross-discipline training in emerging fields now universally identified as critical to society and the understanding of nature.

这个项目将应用原子和分子操作来组装新型量子材料的纳米级。结构和电子特性由量子力学主导的材料，可以产生新的行为或有前途的技术。这些研究的主要实验设备是一台定制的低温扫描隧道显微镜，能够在原子长度尺度上控制物质，该显微镜在斯坦福大学运行。模型纳米材料将装配以三个量子自由度为目标，这三个量子自由度在现代科学技术中发挥着越来越重要的作用：振动自由度、电子的量子力学相和自旋/伪自旋。在这些研究中，仪器的几种操作模式将被利用来在一个由超高真空、4 K或以下的低温和高达9 t的高磁场组成的环境中进行研究。受控的原子和分子操纵以及复杂纳米结构的原子-原子组装是目前仅存在于科学和技术前沿的能力。参与这项拟议的研究和教育计划的学生将在新兴领域接受独特的跨学科培训，这些领域现在被普遍认为对社会和对自然的理解至关重要。现在可以操纵单个原子和分子，真正地将新材料拼凑在一起了吗？由下而上。这个项目将运用原子和分子操纵来组装新型量子材料。结构和电子特性由量子力学主导的材料，可以产生新的行为或有前途的技术。这些研究的主要实验设备是斯坦福大学的一台独特的、定制的扫描隧道显微镜。模型纳米材料将组装为三个量子自由度，这三个量子自由度在现代科学技术中发挥着越来越重要的作用：振动自由度（振动自由度）。电子的量子力学相位（类似于行波的相位）和自旋/伪自旋（材料的内在磁性）。控制原子和分子的操作以及复杂纳米结构的原子-原子组装是目前仅存在于科学和技术前沿的能力。参与这项拟议的研究和教育计划的学生将在新兴领域接受独特的跨学科培训，这些领域现在被普遍认为对社会和对自然的理解至关重要。