Local Moment and Heavy Fermion Physics

局域矩和重费米子物理

• 批准号: 9614999
• 负责人: Piers Coleman
• 金额: $ 22.5万
• 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: 1996
• 资助国家: 美国
• 起止时间: 1996-12-15 至 1999-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9614999&HistoricalAwards=false
• 关键词: Local; Moment; Heavy; Fermion; Physics

9614999 Coleman This grant continues the support of the PI's theoretical work on a variety of problems in materials with strongly correlated electrons. The research program consists of related topics in heavy fermion materials (compounds based on Cerium and Uranium with anomalously large specific heats) and the wider theme of non-Fermi liquid behavior. The plan of research includes: Strong coupling study of Hund's interaction in heavy fermion materials, non-linear susceptibility of a non-Fermi liquid metal, theory of optical Hall conductivity, odd frequency pairing and certain phenomenological formulations of a Kondo insulator. The research builds on the PI's breakthrough work during the previous grant on the properties of non-Fermi liquid materials and on unconventional superconductivity. %%% 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 this area, with recent contributions to the possibility of unconventional superconductivity and exotic forms of magnetism. This grant is to further support the work of this very imaginative and creative scientist. ***

9614999 Coleman这笔赠款继续支持PI的理论工作，这些工作对具有密切相关的电子的材料中的各种问题。 该研究计划由重型费米昂材料（基于葡萄和铀具有异常大的特定热量的化合物）和非弗米液体行为的更广泛主题组成。 研究计划包括：对Hund在重费材料中的相互作用，非线性液体金属的非线性敏感性，光学霍尔电导率理论，奇数配对和近关系绝缘体的某些现象学配方的强烈耦合研究。 该研究基于PI的突破性工作，在上一次赠款中关于非Fermi液体材料的性质和非常规的超导性。 %% %%许多基于元素和铀的化合物具有非常大的特异性热量，好像电子的重量较高一千倍。 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在该领域一直活跃，最近对非常规超导性和磁性外来形式的可能性有所贡献。 这笔赠款是为了进一步支持这位非常富有想象力和创造性科学家的工作。 ***