SOLID STATE PROPERTY OF HIGHLY CORRELATED CONDUCTING SYSTEMS

我们在重型电子系统的各种超条件下取得了巨大进展。当我们将声子介导的吸引力交互与一个f电子字符的限定词文章进行比较时，它在理论上是很难克服的，而不是一个更广泛的术语。为了避免损坏粒子的波浪函数的较大重叠，重型电子系统将更倾向于选择一个异源通道，例如一个P波旋转三脚架或一个D波旋转单脚架状态，形成一个Cooper对。我们继续在研究非BCS超导电性的铀化合物，它有清晰的旋转文本。（p-or f-wave） superconductivity in UPt-D23-D2 from the NMR-Knight shift experiment and also observed a magnetic exci-tation gap associated with d-wave superconductivity of UPd-D22-D2Al-D23-D2。We have observed the de Haas-van？oscillation in the normal and superconducting mixed states of CeRu·D22·D2。在混合状态中散布的quusiparticle被讨论在Maki理论的基础上，另一个进展也是由四聚体化合物制成的。Antiferroquadrupolar ordering of CeBイD26イエD2， where the experimental analyses were inconsistent， is clarified theoretically by considering dipole， quadrupole and octupole in magnetic fields。The metaagnetic transition of PrCuイイD22エD2 brings about an interchange between the easy and hard axes' directions of the magnetization。这一有趣的现象被解释为四边形相互作用的基础。Furthermore，精确的实验已经为抗高压极聚烯烃com-pounds of PrPb D23 y D2， TmTe and Ce y D23 y D2 Pdy D220 y D2 Ge y D26 y D2.添加到这些实验中，许多实验结果已经获得了重电子系统的元磁性、Kondo绝缘子和非Fermi液体效应。

We have made big progress in anisotropic superconductivity of the heavy electron systems . When we compare the phonon-mediated attractive interaction to the strong repulsive interaction among the quasiparticles with an f-electron character, it is theoretically difficult for the former to overcome the latter one. To avoid a large overlap of the wave functions of the paired particles, the heavy electron system would rather choose an anisotropic channel, like a p-wave spin triplet or a d-wave spin singlet state, to form Cooper pairs. We have continued in studying non-BCS superconductivity of uranium compounds, and have clarified spin-triplet (p-or f-wave) superconductivity in UPtィイD23ィエD2 from the NMR-Knight shift experiment and also observed a magnetic exci-tation gap associated with d-wave superconductivity of UPdィイD22ィエD2AlィイD23ィエD2.We have observed the de Haas-van Alphen oscillation in the normal and superconducting mixed states of CeRuィイD22ィエD2 and URuィイD22ィエD2SiィイD22ィエD2. The qusiparticle scattering in the mixed state is discussed on the basis of the Maki theory.Another progress has been also made in quadrupolar compounds. Antiferroquadrupolar ordering of CeBィイD26ィエD2, where the experimental analyses were inconsistent, is clarified theoretically by considering dipole, quadrupole and octupole in magnetic fields. The metamagnetic transition of PrCuィイD22ィエD2 brings about an interchange between the easy and hard axes' directions of the magnetization. This interesting phenomenon is explained on the basis of the quadrupolar interaction. Furthermore, precise experiments have been done for antiferroquadrupolar com-pounds of PrPbィイD23ィエD2, TmTe and CeィイD23ィエD2PdィイD220ィエD2GeィイD26ィエD2.In addition to these experiments, many experimental results have been obtained for metamagnetism of heavy electron systems, Kondo insulators and non-Fermi liquid effect.