Inhomogeneous low frequency spin dynamics in La1.65Eu0.2Sr0.15CuO4

Authors
Curro, NJ Hammel, PC Suh, BJ Hucker, M Buchner, B Ammerahl, U Revcolevschi, A
Citation
Nj. Curro et al., Inhomogeneous low frequency spin dynamics in La1.65Eu0.2Sr0.15CuO4, PHYS REV L, 85(3), 2000, pp. 642-645
Citations number
33
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
85
Issue
3
Year of publication
2000
Pages
642 - 645
Database
ISI
SICI code
0031-9007(20000717)85:3<642:ILFSDI>2.0.ZU;2-E
Abstract
We report Cu and La nuclear magnetic resonance measurements in the title co mpound that reveal an inhomogeneous glassy behavior of the spin dynamics. A low temperature peak in the La spin lattice relaxation rate and the "wipeo ut" of Cu intensity both arise from these slow electronic spin fluctuations that reveal a distribution of activation energies. Inhomogeneous slowing o f spin fluctuations appears to be a general feature of doped lanthanum cupr ate.