Vortex Motion in Patterned Superconductors

图案化超导体中的涡旋运动

• 批准号: 9705353
• 负责人: Rena Zieve
• 金额: $ 1.58万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-01 至 1998-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9705353&HistoricalAwards=false
• 关键词: Vortex; Motion; Patterned; Superconductors

9705353 Zieve This experimental planning grant involves research related to the motion of vortices in Type II superconductors. The PI will exploit recent advances in nanofabrication technology to study the motion of vortices in periodic pinning potentials (arrays of holes) whose characteristic dimensions (hole spacing and hole diameters) can extend to ranges previously inaccessible. One of the objectives is to reach conditions where quantum tunneling of vortices is appreciable. Thus, the plan is to perform quantitative study of both quantum and classical tunneling rates of vortices, and their dependence on details of the vortex pinning potential. %%% This grant supports planning for a study of the motion of magnetic flux (vortex lines) in a thin film of superconductor. This topic is important in connection with the current carrying capacity of superconductors of Type II, which allow a zero resistance state to persist (allowing loss free transmission of electrical energy) even in the presence of a magnetic field. High temperature cuprate superconductors are of this class, and the research being planned under this grant may contribute to the development of an improved technology for the electrical power transmission, and also for improved electrical motors and generators. ***

小行星9705353 这项实验计划拨款涉及与II型超导体中涡旋运动有关的研究。PI将利用纳米纤维技术的最新进展来研究周期性钉扎电位（孔阵列）中的涡旋运动，其特征尺寸（孔间距和孔直径）可以扩展到以前无法达到的范围。目标之一是达到涡旋的量子隧穿是可观的条件。 因此，该计划是进行定量研究的量子和经典的隧道速率的涡旋，和他们的依赖细节的涡旋钉扎潜力。 该补助金支持计划研究超导薄膜中磁通量（涡旋线）的运动。这一主题与当前的承载能力有关， 第二类超导体，它允许零电阻状态持续存在（允许电能的无损耗传输），即使在 存在 的 磁场。 高温 铜酸盐超导体属于这一类，根据这项赠款计划进行的研究可能有助于开发一种改进的电力传输技术，也有助于改进电动机和发电机。 ***