Aging and memory properties of topologically frustrated magnets

Abstract

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.

submitted for the proceedings of the 46th MMM conference (Seattle, 2001)

Cited by in corpus (12)

• Magnetic Pyrochlore Oxides
• Aging and Memory Effects in Superparamagnets and Superspin Glasses
• Orbital Dimer Model for Spin-Glass State in Y${}_2$Mo${}_2$O${}_7$
• Aging, memory, and nonhierarchical energy landscape of spin jam
• The Valence Bond Glass phase
• Memory and rejuvenation in a spin glass
• The nanoscale phase separation in hole-doped manganites
• Jammed spin liquid in the bond-disordered kagome Heisenberg antiferromagnet
• The relative influences of disorder and of frustration on the glassy dynamics in magnetic systems
• Quadrupolar Singlet Ground State of Praseodymium in a Modulated Pyrochlore
• Aging, memory and rejuvenation: some lessons from simple models
• A frustrated antipolar phase analogous to classical spin liquids