Extremely slow nonequilibrium monopole dynamics in classical spin ice

@article{Stter2020ExtremelySN,
  title={Extremely slow nonequilibrium monopole dynamics in classical spin ice},
  author={T. St{\"o}ter and Mathias Doerr and Sergey Granovsky and Martin Rotter and Sebastian T. B. Goennenwein and Sergei Zherlitsyn and O. A. Petrenko and Geetha Balakrishnan and H. D. Zhou and Joachim Wosnitza},
  journal={Physical Review B},
  year={2020}
}
We report on the non-equilibrium monopole dynamics in the classical spin ice Dy$_2$Ti$_2$O$_7$ detected by means of high-resolution magnetostriction measurements. Significant lattice changes occur at the transition from the kagome-ice to the saturated-ice phase, visible in the longitudinal and transverse magnetostriction. A hysteresis opening at temperatures below 0.6 K suggests a first-order transition between the kagome and saturated state. Extremely slow lattice relaxations, triggered by… 
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References

SHOWING 1-10 OF 88 REFERENCES

Far-from-equilibrium monopole dynamics in spin ice

Condensed matter in the low-temperature limit reveals exotic physics associated with unusual orders and excitations, with examples ranging from helium superfluidity1 to magnetic monopoles in spin

Thermal quenches in spin ice.

It is found that due to the Coulomb interaction between the monopoles, a dynamical arrest occurs, in which nonuniversal lattice-scale constraints impede the complete decay of charge fluctuations.

Unconventional magnetization processes and thermal runaway in spin-ice Dy2Ti2O7.

This work investigates the nonequilibrium behavior of the spin-ice Dy2Ti2O7 by studying its magnetization as a function of the field sweep rate, finding that even the slowest sweeps fail to yield the equilibrium magnetization curve and instead give an initially much flatter curve.

Spin Dynamics at Very Low Temperature in Spin Ice Dy2Ti2O7

We have performed AC susceptibility and DC magnetic relaxation measurements on the spin ice system Dy 2 Ti 2 O 7 down to 0.08 K. The relaxation time of the magnetization has been estimated below 2 K

Observation of a liquid-gas-type transition in the pyrochlore spin ice compound Dy2Ti2O7 in a magnetic field.

Low temperature magnetization measurements on the pyrochlore spin ice compound Dy2Ti2O7 reveal that the ice-rule breaking spin flip turns into a novel first-order transition for T<0.36 K which is most probably of a liquid-gas type.

Monopole and Dirac string Dynamics in Spin Ice

Magnetic monopoles have eluded experimental detection since their prediction nearly a century ago by Dirac. Recently it has been shown that classical analogues of these enigmatic particles occur as

Dynamical crossover in 'hot' spin ice

The magnetic dynamics of the spin ice material Ho2Ti2O7 in its paramagnetic ('hot') phase have been investigated by a combination of neutron spin echo and ac-susceptibility techniques. Relaxation at

Tunable nonequilibrium dynamics of field quenches in spin ice

Nonequilibrium physics in spin ice is presented as a unique setting that combines kinematic constraints, emergent topological defects, and magnetic long-range Coulomb interactions and establishes spin ice as a laboratory of choice for the study of tunable, slow dynamics.

Intrinsic and extrinsic nonstationary field-driven processes in the spin-ice compound Dy(2)Ti(2)O(7)

Nonequilibrium processes are probed by ultrasound waves in the spin-ice material Dy(2)Ti(2)O(7) at low temperatures. The sound velocity and the sound attenuation exhibit a number of anomalies versus

Quantum-classical reentrant relaxation crossover in Dy2Ti2O7 spin ice.

Measurements of the ac magnetic susceptibility in the spin ice compound Dy2Ti2O7 suggest the emergence of a collective degree of freedom for which thermal relaxation processes again become important as the spins become strongly correlated.
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