63,65Cu NMR spectra and relaxation measurements in RuSr2GdCu2O8; in the temperature range 5-300 K; are reported. From the second-order quadrupole broadening of the NMR line the quadrupole coupling constant turns out nu(Q) similar or equal to 28.5 MHz: NMR line broadening, possibly related to Ru spins ordering, is observed on cooling. The spin-lattice relaxation rates 2W; involving the in-plane magnetic correlation length, do not show critical behavior above the ordering temperature. On approaching the superconducting transition 2W displays a temperature dependence similar to the one in underdoped YBCO.

CuNMR spectra and relaxation in rutheno-cuprate RuSr2GdCu2O8

TEDESCO, PATRIZIA;LASCIALFARI, ALESSANDRO;RIGAMONTI, ATTILIO;ZUCCA, ILEANA;
2004

Abstract

63,65Cu NMR spectra and relaxation measurements in RuSr2GdCu2O8; in the temperature range 5-300 K; are reported. From the second-order quadrupole broadening of the NMR line the quadrupole coupling constant turns out nu(Q) similar or equal to 28.5 MHz: NMR line broadening, possibly related to Ru spins ordering, is observed on cooling. The spin-lattice relaxation rates 2W; involving the in-plane magnetic correlation length, do not show critical behavior above the ordering temperature. On approaching the superconducting transition 2W displays a temperature dependence similar to the one in underdoped YBCO.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11571/148182
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