Meso- and Nano-Scale Physics in 1D and 2D Collective Transport

一维和二维集体输运中的介观和纳米尺度物理

• 批准号: 0405500
• 负责人: Robert Thorne
• 金额: $ 36万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-05-01 至 2007-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0405500&HistoricalAwards=false
• 关键词: Meso; Nano; Scale; Physics; 1D

Low-dimensional conducting materials continue to provide one of the richest arenas for research in condensed matter physics. Of these materials, the MX(2) and MX(3) compounds, where M=Nb, Ta . . . and X=S, Se . . ., provide unique opportunities for fundamental studies of low-d physics in general and of charge-density waves and flux-line-lattices in particular. This individual investigator award will support a diverse program of experiments on MX(2) and MX(3) compounds that will build on vigorous efforts in crystal growth and characterization and in nanostructure fabrication. Experiments will study local pinning and single particle-collective mode interactions in CDW conductors at low temperatures; dynamics of single phase-coherent CDW domains, velocity-dependent spatio-temporal correlations in CDW dynamics; phase slip in fully gapped CDW materials; field-effect charge modulation in MX(2) and MX(3) dots using ferroelectric gates; and flux-line lattice dynamics in microfabricated NbSe(2) single crystals. This program of research and graduate training will be complemented by the PI's longstanding and vigorous efforts in undergraduate education and outreach.Novel electronic materials including high-temperature superconductors, conducting polymers, carbon nanotubes, and charge-density-wave conductors illuminate the fundamental physical processes that underlie how solid state electronic devices work and provide opportunities for creating the electronics of tomorrow. This individual individual investigator project includes a wide range of experiments to probe the fundamental physics of charge-density wave conductors and their potential for applications. It will provide excellent training to graduate and undergraduate students in the techniques of modern materials science, solid-state physics, and nanotechnology. This project will be complemented by vigorous efforts in undergraduate education and outreach, including development of a web-based tutorial/evaluation system in elementary scientific mathematics and development of a new program to increase the number of high school physics teachers trained at Cornell and to improve the quality of their training.

低维导电材料继续为凝聚态物理的研究提供了最丰富的领域之一。在这些材料中，MX(2)和MX(3)化合物，其中M=Nb, Ta…和X=S, Se…，为一般低密度物理的基础研究，特别是电荷密度波和通量线晶格的基础研究提供了独特的机会。该个人研究者奖将支持MX(2)和MX(3)化合物的多种实验项目，这些实验将建立在晶体生长和表征以及纳米结构制造方面的积极努力之上。实验将研究低温下CDW导体的局部钉钉和单粒子-集体模式相互作用；单相相干CDW域的动力学，CDW动力学中速度依赖的时空相关性；全间隙CDW材料的相滑移；利用铁电门调制MX(2)和MX(3)点的场效应电荷；微晶NbSe(2)单晶的通量线晶格动力学。该研究和研究生培训计划将与PI长期以来在本科教育和推广方面的积极努力相辅相成。新型电子材料，包括高温超导体、导电聚合物、碳纳米管和电荷密度波导体，阐明了固态电子设备如何工作的基本物理过程，并为创造未来的电子产品提供了机会。这个单独的研究者项目包括广泛的实验，以探索电荷密度波导体的基本物理学及其应用潜力。它将为研究生和本科生提供现代材料科学技术、固态物理和纳米技术方面的优秀培训。本项目将辅以大力开展的本科教育和推广工作，包括开发基于网络的基础科学数学教学/评估系统，以及开发一个新项目，以增加在康奈尔大学接受培训的高中物理教师的数量，并提高他们的培训质量。