Experimental Study of Two Dimensional Electron Layers

二维电子层的实验研究

• 批准号: 9401561
• 负责人: Eva Andrei
• 金额: $ 31万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-07-01 至 1997-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9401561&HistoricalAwards=false
• 关键词: Experimental; Study; Two; Dimensional; Electron

9401561 Andrei Technical abstract: Electrons on a helium substrate form a two dimensional electron system. This system will be investigated in a region of the phase diagram where correlations between electrons determine the in-plane and out-of-plane dynamics. The experiments focus on (a) the phase boundary of the electron crystal and how it is affected by screening; (b) the interplay between the electron crystal and Landau quantization in the presence of a perpendicular magnetic field; (c) the effects of crystal correlations on tunneling; (d) the effect of the Landau quantization on magneto-tunneling rates. Non-technical abstract: Electrons captured on a thin layer of helium at very low temperatures form a two dimensional system which can serve as a prototype system for the study of electron states in more conventional states of condensed matter. The key task required for realizing a case in which very many electrons are clustered on the helium film is to reduce significantly the impurities and roughness of the underlying solid on which the helium film is deposited. This project will focus on utilizing ultra clean and ultra smooth solid substrates in order to achieve such a high density of electrons which has not been previously achieved. This high electron density will allow search of as yet undiscovered effects which will be important to the electron on helium problem in particular, but also to other two dimensional electron systems in general. ***

9401561 Andrei技术摘要：氦底物上的电子形成二维电子系统。 该系统将在相图的区域中进行研究，在该区域中，电子之间的相关性决定了面内和平面外动力学。 实验集中在（a）电子晶体的相边界以及如何受筛选影响； （b）在存在垂直磁场的情况下，电子晶体和Landau量化之间的相互作用； （c）晶体相关对隧道的影响； （d）Landau量化对磁肺肺活率的影响。 非技术摘要：在非常低的温度下捕获在氦薄层上的电子形成二维系统，该系统可以用作更常规的凝结物质状态中电子状态的原型系统。 意识到在氦膜上聚集了许多电子的情况所需的关键任务是显着减少沉积氦膜的基础固体的杂质和粗糙度。 该项目将着重于利用超干净和超光滑的固体基材，以实现以前尚未实现的高密度电子。 这种高电子密度将允许搜索尚未发现的效果，这对电子特别是对氦气问题的重要性很重要，而且对通常对其他二维电子系统也很重要。 ***