β Scribed by Y.J. Uemura; G.M. Luke
No coin nor oath required. For personal study only.
We describe recent progress of muon spin relaxation (IxSR) studies in heavy-fermion (HF) and other strongly correlated electron systems. Measurements of the magnetic field penetration depth A in HF superconductors UPt 3, URu2Si 2, UPd2AI 3 and U2PtC 2 have revealed that these systems are characterized by large ratios TΒ’/TF = 0.1-0.01 of T~ vs Fermi temperature T F derived from A. This feature is common to high-T, cuprate and other exotic superconductors. Zero-field IxSR studies of magnetic order have elucidated a cross-over from spin glass ordering to nonmagnetic ground states in the 'quadrupolar Kondo regime' of (YI_~U~)Pd3, and also suggested a possibility of incommensurate spin-density-wave (SDW) ordering in UNi2AI 3.
π SIMILAR VOLUMES
Various types of ground states in strongly correlated electron systems have been systematically investigated by means of NMR/NQR at low temperatures under high magnetic field and pressure. We focus on two well-known heavy-electron families, CeCu2X 2 (X = Si and Ge) (Ce(122)) and UM2AI 3 (M = Ni and