Phase Slip, Dynamics, and Finite-Size Effects in Sliding Charge-Density-Wave Systems

滑动电荷密度波系统中的相滑移、动力学和有限尺寸效应

• 批准号: 9204169
• 负责人: Robert Thorne
• 金额: $ 22万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-08-01 至 1995-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9204169&HistoricalAwards=false
• 关键词: Phase; Slip; Dynamics; Finite; Size

A research program to obtain a more detailed understanding of charge-density-wave (CDW) phenomena and to exploit the long- recognized potential of CDW systems as models for nonlinear many degrees-of-freedom dynamics is proposed. The projects to be investigated include: CDW phase slip at electrical contacts, including the effects of strains required for phase slip; the effects of impurities on vortex nucleation and growth; the dynamics of CDW shear; the exploration of the analogies with other stick- slip processes; the thermal CDW depinning and analogies with thermally-assisted flux flow; the direct imaging of CDW structure and motion by transmission electron microscopy (TEM); and the finite-size effects in CDW dynamics.

提出了一项研究计划，旨在更详细地了解电荷密度波 (CDW) 现象，并开发长期以来公认的 CDW 系统作为非线性多自由度动力学模型的潜力。 要研究的项目包括： 电接触处的 CDW 相滑移，包括相滑移所需的应变的影响；杂质对涡流成核和生长的影响； CDW 剪切动力学；探索与其他粘滑过程的类比；热 CDW 脱钉以及与热辅助通量流的类比；通过透射电子显微镜 (TEM) 对 CDW 结构和运动进行直接成像；以及 CDW 动力学中的有限尺寸效应。