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14 papers · 2 filters
Quantum Impurities and the Neutron Resonance Peak in : Ni versus Zn
Y. Sidis, P. Bourges, H. F. Fong +9
The influence of magnetic (S=1) and nonmagnetic (S=0) impurities on the spin dynamics of an optimally doped high temperature superconductor is compared in two samples with almost i…
Cu NMR evidence for enhanced antiferromagnetic correlations around Zn impurities in YBa2Cu3O6.7
M. -H. Julien, T. Feher, M. Horvatic +5
Doping the high-Tc superconductor YBa2Cu3O6.7 with 1.5 % of non-magnetic Zn impurities in CuO2 planes is shown to produce a considerable broadening of 63Cu NMR spectra, as well as…
Spin Susceptibility in Underdoped
H. F. Fong, P. Bourges, Y. Sidis +6
We report a comprehensive polarized and unpolarized neutron scattering study of the evolution of the dynamical spin susceptibility with temperature and doping in three underdoped s…
89Y NMR Probe of Zn Induced Local Magnetism in YBa2(Cu(1-y)Zn(y))3O(6+x)
A. V. Mahajan, H. Alloul, G. Collin +1
We present detailed data and analysis of the effects of Zn substitution on the planar Cu site in YBaCuO (YBCO) as evidenced from our Y NMR measuremen…
4f-spin dynamics in La(2-x-y)Sr(x)Nd(y)CuO(4)
M. Roepke, E. Holland-Moritz, B. Buechner +7
We have performed inelastic magnetic neutron scattering experiments on La(2-x-y)Sr(x)Nd(y)CuO(4) in order to study the Nd 4f-spin dynamics at low energies. In all samples we find a…
Antiferromagnetism in hydrated 123 compounds
A. V. Dooglav, A. V. Egorov, I. R. Mukhamedshin +8
Copper nuclear quadrupole resonance (NQR) and zero field nuclear magnetic resonance (ZFNMR) studies of YBaCuO show that a magnetic phase appears in underdoped 123 s…