Extremely slow non-equilibrium monopole dynamics in classical spin ice

Abstract

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 changes of the magnetic field, were observed. These lattice-relaxation effects result from non-equilibrium monopole formation or annihilation processes. The relaxation times extracted from our experiment are in good agreement with theoretical predictions with decay constants of the order of $10{}^4$ s at 0.3 K.

References in corpus (10)

• Low Temperature Spin Freezing in Dy2Ti2O7 Spin Ice
• Structural distortion and the spin liquid state in Tb2Ti2O7
• Spin Dynamics at Very Low Temperature in Spin Ice Dy${}_2$Ti${}_2$O${}_7$
• Unconventional magnetization processes and thermal runaway in spin-ice Dy${}_2$Ti${}_2$O${}_7$
• Intermediate magnetisation state and competing orders in Dy${}_2$Ti${}_2$O${}_7$ and Ho${}_2$Ti${}_2$O${}_7$
• Ultrasonic investigations of spin-ices Dy${}_2$Ti${}_2$O${}_7$ and Ho${}_2$Ti${}_2$O${}_7$ in and out of equilibrium
• Dynamic behavior of magnetic avalanches in the spin-ice compound Dy${}_2$Ti${}_2$O${}_7$
• Symmetry considerations on the magnetization process of the Heisenberg model on the pyrochlore lattice
• Structural phase transitions in geometrically frustrated antiferromagnets
• Nuclear spin assisted quantum tunnelling of magnetic monopoles in spin ice

Cited by in corpus (2)

• Crystal-field magnetostriction of the spin ice under ultrahigh magnetic fields
• Low-temperature high-frequency dynamic magnetic susceptibility of classical spin-ice Dy${}_2$Ti${}_2$O${}_7$