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;
2004-01-01
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.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
