The model 2d kagome system (H3O)Fe3(SO4)2(OH)6 and the 3d pyrochlore Y2Mo2O7 are two well characterized examples of low-disordered frustrated antiferromagnets which rather then condensing into spin liquid have been found to undergo a freezing transition with spin glass-like properties. We explore more deeply the comparison of their properties with those of spin glasses, by the study of characteristic rejuvenation and memory effects in the non-stationary susceptibility. While the pyrochlore shows clear evidence for these non-trivial effects, implying temperature selective aging, that is characteristic of a wide hierarchical distribution of equilibration processes, the kagome system does n not show clearly these effects. Rather, it seems to evolve towards the same final state independently of temperature.
@article{arxiv.cond-mat/0109242,
title = {Aging and memory properties of topologically frustrated magnets},
author = {V. Dupuis and E. Vincent and J. Hammann and J. E. Greedan and A. S. Wills},
journal= {arXiv preprint arXiv:cond-mat/0109242},
year = {2009}
}
Comments
submitted for the proceedings of the 46th MMM conference (Seattle, 2001)