Correlations Between Charge Ordering and Local Magnetic Fields in Overdoped YBa_2Cu_3O_{6+x}
J.E. Sonier, J.H. Brewer, R.F. Kiefl, R.H. Heffner, K. Poon, S.L. Stubbs, G.D. Morris, R.I. Miller, W.N. Hardy, R. Liang, D.A. Bonn, J.S. Gardner, N.J. Curro
Abstract
Zero-field muon spin relaxation (ZF-\muSR) measurements were undertaken on under- and overdoped samples of superconducting YBa_2Cu_3O_{6+x} to determine the origin of the weak static magnetism recently reported in this system. The temperature dependence of the muon spin relaxation rate in overdoped crystals displays an unusual behavior in the superconducting state. A comparison to the results of NQR and lattice structure experiments on highly doped samples provides compelling evidence for strong coupling of charge, spin and structural inhomogeneities.