Quantum and thermal spin relaxation in diluted spin ice: Dy(2-x)MxTi2O7 (M = Lu, Y)

Abstract

We have studied the low temperature a.c. magnetic susceptibility of the diluted spin ice compound Dy(2-x)MxTi2O7, where the magnetic Dy ions on the frustrated pyrochlore lattice have been replaced with non-magnetic ions, M = Y or Lu. We examine a broad range of dilutions, 0 <= x <= 1.98, and we find that the T ~ 16 K freezing is suppressed for low levels of dilution but re-emerges for x > 0.4 and persists to x = 1.98. This behavior can be understood as a non-monotonic dependence of the quantum spin relaxation time with dilution. The results suggest that the observed spin freezing is fundamentally a single spin process which is affected by the local environment, rather than the development of spin-spin correlations as earlier data suggested.

26 pages, 9 figures

References in corpus (18)

• Spin Ice State in Frustrated Magnetic Pyrochlore Materials
• Dipolar Interactions and Origin of Spin Ice in Ising Pyrochlore Magnets
• Spin Correlations in Ho${}_2$Ti${}_2$O${}_7$: a Dipolar Spin Ice System
• Long Range Order at Low Temperature in Dipolar Spin Ice
• Ising pyrochlore magnets: Low temperature properties, ice rules and beyond
• Low Temperature Spin Freezing in Dy2Ti2O7 Spin Ice
• Magnetic anisotropy of the spin ice compound Dy2Ti2O7
• A new macroscopically degenerate ground state in the spin ice compound Dy2Ti2O7 under a magnetic field
• Neutron scattering study of dipolar spin ice Ho_2Sn_2O_7: Frustrated pyrochlore magnet
• Quantum-Classical Reentrant Relaxation Crossover in Dy2Ti2O7 Spin-Ice
• Magnetic susceptibility of diluted pyrochlore and SCGO antiferromagnets
• Susceptibility and dilution effects of the kagome bi-layer geometrically frustrated network. A Ga-NMR study of SrCr_(9p)Ga_(12-9p)O_(19)
• Short-range Magnetic interactions in the Spin-Ice compound Ho${}_2$Ti${}_2$O${}_7$
• Dynamic properties of a diluted pyrochlore cooperative paramagnet (Tb_pY_{1-p})_2Ti_2O_7
• Ga NMR study of the local susceptibility in SrCr8Ga4O19: pseudogap and paramagnetic defects
• Dirty Spin Ice: The Effect of Dilution on Spin Freezing in Dy2Ti2O7
• Ordering and partial ordering in holmium titanate and related systems
• Critical behavior of 2 and 3 dimensional ferro- and antiferromagnetic spin ice systems in the framework of the Effective Field Renormalization Group technique

Cited by in corpus (27)

• Magnetic Pyrochlore Oxides
• Stuffed Rare Earth Pyrochlore Solid Solutions
• Revisiting Static and Dynamic Spin Ice Correlations in Ho2Ti2O7
• Non-monotonic zero point entropy in diluted spin ice
• Geometrical Magnetic Frustration in Rare Earth Chalcogenide Spinels
• Structural Disorder and Properties of the Stuffed Pyrochlore Ho2TiO5
• Slow spin relaxation in a highly polarized cooperative paramagnet
• New physics in frustrated magnets: Spin ices, monopoles, etc
• Magnetothermodynamics of the Ising Antiferromagnet Dy2Ge2O7
• Magnetocaloric Study of Spin Relaxation in `Frozen' Dipolar Spin Ice Dy2Ti2O7
• Spin ice behavior in Dy2Sn2-xSbxO7+x/2 and Dy2NbScO7
• Magnetic correlations in spin ice Ho2-xYxTi2O7 as revealed by neutron polarization analysis
• Investigations of the effect of nonmagnetic Ca substitution for magnetic Dy on spin-freezing in Dy2Ti2O7
• High temperature spin-freezing transition in Pyrochlore Eu2Ti2O7: A new observation from ac-susceptibility
• Low temperature dynamic freezing and the fragility of ordering in Tb2Sn2O7
• Magnetothermal study of Dy Stuffed Spin Ice: Dy2(DyxTi2-x)O7-x/2
• Experimental observation of magnetoelectricity in spin ice Dy${}_2$Ti${}_2$O${}_7$
• Possible Quantum Diffusion of Polaronic Muons in Dy${}_2$Ti${}_2$O${}_7$ Spin Ice
• Emergent order in the spin-frustrated system DyxTb2-xTi2O7 studied by ac susceptibility measurements
• Structure and magnetic studies of geometrically frustrated disordered pyrochlores A${}_2$Zr${}_2$O${}_7$: (A = Eu, Gd, Er)
• Low-temperature muon spin rotation studies of the monopole charges and currents in Y doped Ho2Ti2O7
• Short-range order and hidden energy scale in geometrically frustrated magnets
• Dilution effects in Ho${}_{2-x}$Y${}_x$Sn${}_2$O${}_7$: from the Spin Ice to the single-ion magnet
• Electronic structure by X-ray absorption spectroscopy and observation offield induced unusually slowspin relaxation from magnetic properties in pyrochlore Eu${}_{2-x}$Fe${}_x$Ti${}_2$O${}_7$
• Field induced spin freezing and low temperature heat capacity of disordered pyrochlore oxide Ho${}_2$Zr${}_2$O${}_7$
• Traversing the pyrochlore stability diagram; microwave-assisted synthesis and discovery of mixed B-site Ln${}_2$InSbO${}_7$ family
• Anomalous out-of-equilibrium dynamics in the spin-ice material Dy${}_2$Ti${}_2$O${}_7$ under moderate magnetic fields