In materials with strong local Coulomb interactions, simple defects such as atomic
substitutions strongly affect both macroscopic and local properties of the system. A …

A review of the muon spin rotation and relaxation studies on magnetic materials published
from July 1993 is presented. It covers the investigation of magnetic phase diagrams, that of …

We study the do** of a Mott insulator in the presence of quenched frustrating disorder in
the magnitude and sign of the magnetic exchange. Two quite different do** regimes δ< δ …

We have performed transverse-field muon spin relaxation measurements of the Zn-
substituted cuprate high-T c superconductors: La 2− x Sr x (Cu 1− y Zn y) O 4 and YBa 2 (Cu …

Do** the high-T c superconductor YBa 2 Cu 3 O 6.7 with 1.5% of nonmagnetic Zn
impurities in CuO 2 planes is shown to produce a considerable broadening of 63 Cu NMR …

The dynamic and static magnetic properties of La 1.85 Sr 0.15 Cu 1-y Ni y O 4 with Ni
concentration up to y= 0.63 are reported. All the features that characterize the spin-glass …

A fundamental obstacle to understanding high-temperature superconducting cuprates is that
the occurrence of superconductivity hinders the observation of the normal-state properties at …

We present SQUID susceptibility data on Zn and Ni substituted YBa 2 Cu 3 O 6+ x. Cross-
checks with NMR yield an unprecedented accuracy in the estimate of the magnetic …

We report an inelastic-neutron-scattering and muon-spin-relaxation study of the effect of 2%
spinless (Zn) impurities on the magnetic order and dynamics of YBa 2 Cu 3 O 6.6, an …

Detailed resistivity and susceptibility measurements are reported on YBa 2 (Cu 1− x Zn x) 3
O 7 ceramics samples for 0%≤ x≤ 10% in the normal state. The superconducting …