The relative influences of disorder and of frustration on the glassy dynamics in magnetic systems

@article{Ladieu2004TheRI,
  title={The relative influences of disorder and of frustration on the glassy dynamics in magnetic systems},
  author={François Ladieu and Fabrice Bert and Vincent Dupuis and Eric Vincent and Jacques Hammann},
  journal={Journal of Physics: Condensed Matter},
  year={2004},
  volume={16},
  pages={735-741}
}
The magnetization relaxations of three different types of geometrically frustrated magnetic systems have been studied with the same experimental procedures as previously used in spin glasses. The materials investigated are Y2Mo2O7 (pyrochlore system), SrCr8.6Ga3.4O19 (piled pairs of Kagome layers) and (H3O)Fe3(SO4)2(OH)6 (jarosite compound). Despite a very small amount of disorder, all the samples exhibit many characteristic features of spin glass dynamics below a freezing temperature Tg, much… 

Figures from this paper

Spin-Orbital Glass Transition in a Model of a Frustrated Pyrochlore Magnet without Quenched Disorder.
TLDR
The authors' Monte Carlo simulations detect the power-law divergence of the relaxation times and the negative divergence of both the magnetic and dielectric nonlinear susceptibilities, resolving the long-standing puzzle on the origin of the disorder-free spin glass.
Mean-field phase diagram and spin-glass phase of the dipolar kagome Ising antiferromagnet
We derive the equilibrium phase diagram of the classical dipolar Ising antiferromagnet at the mean-field level on a geometry that mimics the two dimensional Kagome lattice. Our mean-field treatment
Heterogeneous freezing in a geometrically frustrated spin model without disorder: Spontaneous generation of two time scales
By considering the constrained motion of classical spins in a geometrically frustrated magnet, we find a dynamical freezing temperature below which the system gets trapped in metastable states with a
Scaling of Memories and Crossover in Glassy Magnets
TLDR
It is shown that scaling of magnetic memories with time can be used to classify magnetic glassy materials into two distinct classes, and a systematic study on dilute magnetic alloys with varying magnetic concentration exhibits crossovers among the two glassy states and spin solid.
High-dimensional fractionalization and spinon deconfinement in pyrochlore antiferromagnets
The ground states of Klein type spin models on the pyrochlore and checkerboard lattice are spanned by the set of singlet dimer coverings, and thus possess an extensive ground--state degeneracy. Among
Crystal Growth and Structure of the New Ferrimagnetic Oxyphosphate PbFe3O(PO4)3
A new oxyphosphate, PbFe3O(PO4)3, has been discovered and its structure has been characterized by single-crystal XRD between 293 and 973 K (monoclinic, space groupP21/m, a = 7.5826 A, b = 6.3759 A, c
Out-of-equilibrium electronic transport properties of a misfit cobaltite thin film
We report on transport measurements in a thin film of the 2D misfit Cobaltite ${\mathrm{Ca}}_{3}{\mathrm{Co}}_{4}{\mathrm{O}}_{9}$. Dc magnetoresistance measurements obey the modified variable range
Aging, memory, and nonhierarchical energy landscape of spin jam
TLDR
It is shown that densely populated frustrated magnets in a spin jam state exhibit much weaker memory effects than spin glasses, and the characteristic properties can be reproduced by a nonhierarchical landscape with a wide and nearly flat but rough bottom.
Magnetic Pyrochlore Oxides
Within the past 20 years or so, there has occurred an explosion of interest in the magnetic behavior of pyrochlore oxides of the type $A_{2}^{3+}$$B_{2}^{4+}$O$_{7}$ where $A$ is a rare-earth ion and
...
...

References

SHOWING 1-10 OF 17 REFERENCES
Memory and superposition in a spin glass
Magnetic properties of nanoparticle systems and spin glasses have been investigated theoretically, and experimentally by squid magnetometry.Two model three-dimensional spin glasses have been studied:
Nonequilibrium dynamics in a three-dimensional spin glass
Magnetic properties of nanoparticle systems and spin glasses have been investigated theoretically, and experimentally by squid magnetometry.Two model three-dimensional spin glasses have been studied:
Aging and memory properties of topologically frustrated magnets
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 than condensing into spin
Separation of time and length scales in spin glasses: Temperature as a microscope
We summarize the different puzzles raised by aging experiments of spin glasses and their various interpretations. We try to reconcile the "real space," dropletlike pictures with the hierarchical
Aging in a topological spin glass
Using a combination of static and time dependent magnetic susceptibility measurements we have examined the nonconventional spin glass phase of the 2-dimensional kagome antiferromagnet
Ageing Process and Response Function in Spin Glasses: An Analysis of the Thermoremanent Magnetization Decay in Ag:Mn (2.6%)
The time decay of the thermoremanent magnetization has been measured in Ag:Mn (2.6%) below Tg for a wide range of waiting and observation times. A scaling analysis of the ageing process has been
Magnetic properties of pure and diamagnetically doped jarosites: Model kagome antiferromagnets with variable coverage of the magnetic lattice
Jarosites are a family of minerals of general formula AFe(3)(OH)(6)(SO4)(2) (where A(+) is typically a univalent cation such as Na+, K+, Rb+, ND4+, Ag+, Tl+, or D3O+). They provide good model
Slow dynamics and aging in spin glasses
Contribution presented by Eric Vincent in the Conference `Complex Behaviour of Glassy Systems', Sitges, Barcelona, Spain, June, 1996. It contains a review of the experimental results on Slow dynamics
Magnetic dilution in the geometrically frustrated SrCr(9p)Ga(12-9p)O19 and the role of local dynamics: A muon spin relaxation study
TLDR
The p dependence of the dynamical properties is identical below and above p(c), indicating that they are controlled by local excitation.
Local lattice disorder in the geometrically frustrated spin-glass pyrochlore Y 2 Mo 2 O 7
The geometrically frustrated spin-glass Y{sub 2}Mo{sub 2}O{sub 7} has been widely considered to be crystallographically ordered with a unique nearest-neighbor magnetic exchange interaction, J. To
...
...