Abstract
We report measurements of NMR spin-lattice (T 1 ) and spin-spin (T 2 ) relaxation times for 89 Y in the parent structure of the electron–doped copper–oxide superconductors. T 1 data exhibit non–exponential recovery with T 1 ≍ 20 s. T 2 decreases rapidly with temperature above the Néel temperature, but remains constant above 425 K. We discuss these behaviors by considering fluctuating antiferromagnetic spin clusters associated with oxygen defects.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
Y. Tokura et al., Nature 337, 345 (1989); J. T. Markert et al., Physica C 158, 178 (1989).
P. G. Raedelli et al., Phys. Rev. B 49, 15322 (1994).
V. Chechersky et al., Phys. Rev. Lett. 70, 3355 (1993); A. Nath et al., Science 265, 73 (1994).
B.-H. O et al., Physica C 235–240, 551 (1994).
H. Alloul et al., Physica C 171, 419 (1990).
V. Chechersky et al., Phys. Rev. B 54, 16254 (1996).
M. A. Dubson and D. F. Holcomb, Phys. Rev. B 34, 25 (1986).
J. T. Markert et al., Solid State Commun. 63, 847 (1987).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Zeyer, M., Bleifuss, G. & Markert, J.T. NMR of 89Y in T′-Phase La1.5 Y0.5CuO4 . Journal of Low Temperature Physics 117, 461–465 (1999). https://doi.org/10.1023/A:1022502624109
Issue Date:
DOI: https://doi.org/10.1023/A:1022502624109