Local Moment and Heavy Fermion Physics

局域矩和重费米子物理

• 批准号: 9983156
• 负责人: Piers Coleman
• 金额: $ 24.6万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-12-01 至 2003-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9983156&HistoricalAwards=false
• 关键词: Local; Moment; Heavy; Fermion; Physics

9983156ColemanThis grant continues the support of the PI's theoretical work on a variety of problems in materials with strongly correlated electrons arising from strong local interelectron interactions. The research program consists of related topics in heavy fermion materials (i.e., compounds based on cerium and uranium with anomalously large specific heats). Part of the work is motivated by a new range of experiments that fine tune heavy fermion materials to a magnetic quantum critical point, with a goal of resolving whether local moments emerge at the quantum critical point or whether the transition is better described as a spin-density wave instability.%%%Many of the cerium and uranium based compounds have extraordinarily large specific heats, as if the electrons were a thousand times heavier. Ever since the discovery of these materials in mid-eighties, there has been a continuing interest in the properties of these materials. The PI has been active in theoretical work on these materials and related materials which have strongly correlated electronic effects arising from strong localized interactions between electrons. This work has potential impact on a range of phenomena from superconducting to magnetic properties of these materials.***

9983156Colemanthis Thrist Grant继续支持PI的理论工作，这些工作对具有强烈相关电子的材料中的各种问题，这是由强烈的局部互相互作用引起的。 该研究计划由重型费米昂材料（即基于葡萄和铀的化合物具有异常大的特定热量）组成。 一部分工作的动机是由新的实验范围的范围来调节重型费米材料的磁量临界点，目的是解决量子临界点是否出现的本地矩，还是更好地描述过过渡为旋转密度波不稳定性。%%％cerium cerium and Basity of Forge of Forge the Exterier after Enigenter of Exterier as Beadier as Beather Electer ake Meartons Electier as he nays Electer ake Mearth eyny nays Electier。 自从八十年代中期发现这些材料以来，人们一直对这些材料的性质产生持续的兴趣。 PI在这些材料和相关材料的理论工作中一直活跃，这些材料和相关材料与电子之间强烈的局部相互作用产生的电子效应密切相关。 这项工作对从超导到这些材料的磁性的一系列现象具有潜在的影响。***