Fundamental Experimental Properties of Mesoscopic Systems

介观系统的基本实验特性

• 批准号: 9510416
• 负责人: Richard Webb
• 金额: $ 30万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-15 至 1998-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9510416&HistoricalAwards=false
• 关键词: Fundamental; Experimental; Properties; Mesoscopic; Systems

9510416 Webb Low temperature transport and magnetic susceptibility measurements will be carried out on a variety of mesoscopic structures. The experiments will likely elucidate the nature of the persistent current in isolated rings and arrays of rings and the role of phase coherent electrons in screening a single magnetic impurity. These measurements will require fabrication of the highest resolution magnetic detectors currently available. Other investigations of magnetic properties include non-periodic fluctuation effects, study of the Kondo Effect in mesoscopic dots, and an investigation of the dynamic properties of mesoscopic systems using dc squids in nuclear magnetic and electron spin resonance experiments. %%% The physics of small structures provides the foundation upon which future electronic technologies will be based. It is consequently extremely important that all of the potentially relevant physical properties of these systems are identified and understood. The current research carries out such systematic investigation of the low temperature magnetic properties of ultrasmall devices. During the course of these investigations some of the most sensitive detectors available anywhere, which can discern very small spatial dimensions, will be built and tested. ***

小行星9510416 将对各种介观结构进行低温输运和磁化率测量。 这些实验可能会阐明孤立环和环阵列中持续电流的性质，以及相位相干电子在屏蔽单个磁性杂质中的作用。 这些测量将需要制造目前可用的最高分辨率磁探测器。 其他研究磁性包括非周期性波动效应，近藤效应在介观点的研究，以及在核磁和电子自旋共振实验中使用直流鱿鱼的介观系统的动态特性的研究。 小结构的物理学为未来的电子技术奠定了基础。 因此，识别和理解这些系统的所有潜在相关物理性质是极其重要的。 目前的研究对超小型器件的低温磁性能进行了系统的研究。 在这些调查过程中，将建造和测试任何地方都可以使用的一些最灵敏的探测器，这些探测器可以识别非常小的空间维度。 ***