Local Moment and Heavy Fermion Physics

9614999 Coleman这项拨款继续支持PI在具有强相关电子的材料中的各种问题的理论工作。研究计划包括重费米子材料（基于铈和铀的化合物，具有异常大的比热）的相关主题和非费米液体行为的更广泛主题。研究计划包括：重费米子材料中洪德相互作用的强耦合研究、非费米液态金属的非线性磁化率、光学霍尔电导率理论、奇频配对和近道绝缘子的某些现象学公式。这项研究建立在PI之前在非费米液体材料和非常规超导性方面的突破性工作的基础上。许多以铈和铀为基础的化合物具有非常大的比热，好像电子重了一千倍。自从这些材料在八十年代中期被发现以来，人们对这些材料的性质一直很感兴趣。PI一直活跃在这一领域，最近对非常规超导性和奇异形式磁性的可能性做出了贡献。这笔拨款是为了进一步支持这位富有想象力和创造力的科学家的工作。＊＊＊

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. ***