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

低维导电材料继续为凝聚态物理的研究提供最丰富的领域之一。这些材料中的MX(2)和MX(3)化合物，其中M=Nb，Ta。。。和X=S，Se。。..，为一般的低d物理，特别是电荷密度波和磁通线晶格的基础研究提供了独特的机会。这一个人研究人员奖将支持一项针对MX(2)和MX(3)化合物的多样化实验计划，该计划将建立在晶体生长和表征以及纳米结构制造的积极努力基础上。实验将研究低温下CDW导体中的局域钉扎和单粒子-集体模相互作用；单相相干CDW磁畴的动力学，CDW动力学中与速度相关的时空关联；完全禁带CDW材料中的相移；利用铁电门在MX(2)和MX(3)点中的场效应电荷调制；以及微细加工NbSe(2)单晶中的磁通线晶格动力学。这项研究和研究生培训计划将得到PI在本科教育和拓展方面长期而积极的努力的补充。包括高温超导体、导电聚合物、碳纳米管和电荷密度波导体在内的新型电子材料阐明了固态电子设备工作的基本物理过程，并为创造明天的电子产品提供了机会。这个单独的研究项目包括广泛的实验，以探索电荷密度波导体的基本物理及其应用潜力。它将为研究生和本科生提供现代材料科学、固态物理和纳米技术方面的优秀培训。除了该项目外，还将在本科教育和推广方面作出积极努力，包括开发一个基于网络的初级科学数学辅导/评估系统，并制定一项新的计划，以增加在康奈尔大学接受培训的高中物理教师的人数，并提高他们的培训质量。

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.