Low Temperature Specific Heat of Dy${}_2$Ti${}_2$O${}_7$ in the Kagome Ice State

Abstract

We report the specific heat of single crystals of the spin ice compound Dy${}_2$Ti${}_2$O${}_7$ at temperatures down to 100 mK in the so-called Kagome ice state. In our previous paper, we showed the anisotropic release of residual entropy in different magnetic field directions and reported new residual entropy associated with spin frustration in the Kagome slab for field in the [111] direction. In this paper, we confirm the first-order phase transition line in the field-temperature phase diagram and the presence of a critical point at (0.98 T, 400 mK), previously reported from the magnetization and specific-heat data. We newly found another peak in the specific heat at 1.25 T below 0.3 K. One possible explanation for the state between 1 T and 1.25 T is the coexistence of states with different spin configurations including the 2-in 2-out one (Kagome ice state), the 1-in 3-out state (ordered state) and paramagnetic one (free-spin state).

14 pages, 7 figures

Cited by in corpus (29)

• Magnetic Monopoles in Spin Ice
• The power of a critical heat engine
• The Chemistry of Quantum Spin Liquids
• Observation of Magnetic Monopoles in Spin Ice
• Kagomé ice state in the dipolar spin ice Dy_{2}Ti_{2}O_{7}
• Finite Temperature Transitions in Large Magnetic Field in Dipolar Spin Ice
• Neutron scattering studies of the spin ices Ho2Ti2O7 and Dy2Ti2O7 in applied magnetic field
• Residual Entropy of Ordinary Ice from Multicanonical Simulations
• Work and power fluctuations in a critical heat engine
• Magnetodielectric Response of the Spin-Ice Dy2Ti2O7
• New physics in frustrated magnets: Spin ices, monopoles, etc
• Charge ordering in a pure spin model: dipolar spin-ice
• Intermediate magnetisation state and competing orders in Dy${}_2$Ti${}_2$O${}_7$ and Ho${}_2$Ti${}_2$O${}_7$
• Field-Induced Transition on Triangular Plane in the Spin Ice Compound Dy2Ti2O7
• An irreversible magnetic-field dependence of low-temperature heat transport of spin-ice compound Dy_2Ti_2O_7 in a [111] field
• Spin ice in a field: quasi-phases and pseudo-transitions
• Low-temperature thermal conductivity of Dy_2Ti_2O_7 and Yb_2Ti_2O_7 single crystals
• Intrinsic and extrinsic nonstationary field-driven processes in the spin-ice compound Dy2Ti2O7
• The multiple symmetry sustaining phase transitions of spin ice
• Suppression of the Shastry-Sutherland phase in Ce${}_2$Pd${}_2$Sn at a field induced critical point
• Emergence of weak pyrochlore phase and signature of field induced spin ice ground state in Dy${}_{2-x}$La${}_x$Zr${}_2$O${}_7$; x = 0, 0.15, 0.3
• An intermediate state between the kagome-ice and the fully polarized state in Dy${}_2$Ti${}_2$O${}_7$
• Field-Induced Ordering in Dipolar Spin Ice
• Magnetic Switching by Oxygen Adsorption in Metal-Organic Framework Systems
• Tuning interactions in the spin-ice materials Dy${}_2$Ge${}_{2-x}$Si${}_x$O${}_7$ by silicon substitution
• Universal dynamics of magnetic monopoles in two-dimensional kagomé ice
• Probing ice-rule-breaking transition in $\mathrm{D}{\mathrm{y}}_2\mathrm{T}{\mathrm{i}}_2{\mathrm{O}}_7$ thin film by proximitized transport and magnetic torque
• Collinear Magnetic Structure in the Diamond Network Magnet EuTi${}_2$Al${}_{20}$
• Low-temperature high-frequency dynamic magnetic susceptibility of classical spin-ice Dy${}_2$Ti${}_2$O${}_7$