G. Will, N. Masciocchi, et al.
Zeitschrift fur Kristallographie - New Crystal Structures
Paper
Nuclear spin lattice relaxation of 139La in La1.8Sr0.20uO4-δ and La 2CuO4
Abstract
Nuclear spin-lattice relaxation of 139La in (I) La1.8Sr0.2CuO4-δ and La2CuO4 was investigated. Below the superconducting transition temperature Tc = 38 K the relaxation rate in (I) follows an Arrhenius law with an activation energy Δ = 11.5 meV, leading to a gap energy of 2Δ/kTc = 7. The relaxation time of 139La in (II), however, shows a completely different temperature dependence, which can be explained by antiferromagnetic fluctuations. © 1988 Elsevier Science Publishers B.V.
Related
Kigook Song, Robert D. Miller, et al.
Macromolecules
A. Gupta, R. Gross, et al.
SPIE Advances in Semiconductors and Superconductors 1990
Julian J. Hsieh
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films