Unconventional magnetization processes and thermal runaway in spin-ice Dy${}_2$Ti${}_2$O${}_7$

Abstract

We investigate the non-equilibrium behavior of the spin-ice material Dy${}_2$Ti${}_2$O${}_7$ by studying its magnetization as a function of the rate at which an external field is swept. At temperatures below the enigmatic "freezing" temperature $T_{\mathrm{equil}}\approx 600$ mK, we find that even the slowest sweeps fail to yield the equilibrium magnetization curve and instead give a smooth, initially much flatter curve. For higher sweep rates, the magnetization develops sharp steps accompanied by similarly sharp peaks in the temperature of the sample. We ascribe the former behavior to the energy barriers encountered in the magnetization process, which proceeds via flipping of spins on filaments traced out by the field-driven motion of the gapped, long-range interacting magnetic monopole excitations. In contrast, the peaks in temperature result from the released Zeeman energy not being carried away efficiently into the bath, with the resulting heating triggering a chain reaction.

4 pages, 3 figures

References in corpus (10)

• Magnetic Monopoles in Spin Ice
• Signature of magnetic monopole and Dirac string dynamics in spin ice
• Avalanches, Barkhausen Noise, and Plain Old Criticality
• Low Temperature Spin Freezing in Dy2Ti2O7 Spin Ice
• Why spin ice obeys the ice rules
• A new macroscopically degenerate ground state in the spin ice compound Dy2Ti2O7 under a magnetic field
• Magnetization process of spin ice in a [111] magnetic field
• Neutron scattering studies of the spin ices Ho2Ti2O7 and Dy2Ti2O7 in applied magnetic field
• Theory of magnetic deflagration
• Field Induced Partial Order in the Spin-Ice Dysprosium Titanate

Cited by in corpus (38)

• Spin Ice, Fractionalization and Topological Order
• Debye-Hückel theory for spin ice at low temperature
• Far from equilibrium monopole dynamics in spin ice
• New physics in frustrated magnets: Spin ices, monopoles, etc
• Monopoles, magnetricity and the stray field from spin ice
• Intermediate magnetisation state and competing orders in Dy${}_2$Ti${}_2$O${}_7$ and Ho${}_2$Ti${}_2$O${}_7$
• When opposites repel: from metastability to extended chiral spin textures in spin ice with short-range topological-defect interactions
• Thermal Conductivity and Specific Heat of the Spin-Ice Compound Dy${}_2$Ti${}_2$O${}_7$: Experimental Evidence for Monopole Heat Transport
• First order metamagnetic transition in Ho2Ti2O7 observed by vibrating coil magnetometry at milli-Kelvin temperatures
• Fragmented monopole crystal, dimer entropy and Coulomb interactions in Dy${}_2$Ir${}_2$O${}_7$
• Out of equilibrium dynamics in the bidimensional spin-ice model
• Titanium pyrochlore magnets: how much can be learned from magnetization measurements?
• AC Wien effect in spin ice, manifest in non-linear non-equilibrium susceptibility
• Dimensionality and irreversibility of field-induced transitions in SrDy2O4
• Anomalous magnetic noise in imperfect flat bands in the topological magnet Dy2Ti2O7
• Monopole ordered phases in dipolar and nearest-neighbours Ising pyrochlore: from spin ice to the "all-in--all-out" antiferromagnet
• Ultrasonic investigations of spin-ices Dy${}_2$Ti${}_2$O${}_7$ and Ho${}_2$Ti${}_2$O${}_7$ in and out of equilibrium
• Generalised Longitudinal Susceptibility for Magnetic Monopoles in Spin Ice
• An irreversible magnetic-field dependence of low-temperature heat transport of spin-ice compound Dy_2Ti_2O_7 in a [111] field
• Dynamic behavior of magnetic avalanches in the spin-ice compound Dy${}_2$Ti${}_2$O${}_7$
• Anisotropic Monopole Heat Transport in the Spin-Ice Compound Dy${}_2$Ti${}_2$O${}_7$
• Low-temperature thermal conductivity of Dy_2Ti_2O_7 and Yb_2Ti_2O_7 single crystals
• Emergent Coulombic criticality and Kibble-Zurek scaling in a topological magnet
• Intrinsic and extrinsic nonstationary field-driven processes in the spin-ice compound Dy2Ti2O7
• Suppression of Pauling's Residual Entropy in Dilute Spin Ice (Dy${}_{1-x}$Y${}_x$)${}_2$Ti${}_2$O${}_7$
• Heat transport of the spin-ice materials Ho${}_2$Ti${}_2$O${}_7$ and Dy${}_2$Ti${}_2$O${}_7$
• Static properties of 2D spin-ice as a sixteen-vertex model
• Ferromagnetism and spin-dependent transport at a complex oxide interface
• Nuclear spin assisted quantum tunnelling of magnetic monopoles in spin ice
• Low-temperature muon spin rotation studies of the monopole charges and currents in Y doped Ho2Ti2O7
• Prethermal time-crystalline spin ice and monopole confinement in a driven magnet
• Structural magnetic glassiness in spin ice Dy${}_2$Ti${}_2$O${}_7$
• Hybrid Dyons, inverted Lorentz force and magnetic Nernst effect in quantum spin ice
• Extremely slow non-equilibrium monopole dynamics in classical spin ice
• Anomalous out-of-equilibrium dynamics in the spin-ice material Dy${}_2$Ti${}_2$O${}_7$ under moderate magnetic fields
• Quasiparticle Dynamics in the 4d-4f Ising-like Double Perovskite Ba2DyRuO6 studied using Neutron Scattering and Machine-Learning Framework
• Long-range Coulomb interactions and nonhydrodynamic behavior in thermal quenches in spin ice
• Effect of electromagnetic permeability on transition temperature of superconductivity