Quantum and thermal spin relaxation in the diluted spin ice Dy 2-xMxTi2O7 (M=Lu, Y)

J. Snyder; B. G. Ueland; Ari Mizel; J. S. Slusky; H. Karunadasa; R. J. Cava; P. Schiffer

doi:10.1103/PhysRevB.70.184431

Quantum and thermal spin relaxation in the diluted spin ice Dy _2-xM_xTi₂O₇ (M=Lu, Y)

J. Snyder, B. G. Ueland, Ari Mizel, J. S. Slusky, H. Karunadasa, R. J. Cava, P. Schiffer

Research output: Contribution to journal › Article › peer-review

Abstract

We have studied the low-temperature ac magnetic susceptibility of the diluted spin ice compound Dy_2-xM_xTi₂O ₇, where the magnetic Dy ions on the frustrated pyrochlore lattice have been replaced with nonmagnetic 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 nonmonotonic dependence of the quantum spin relaxation time with dilution. The results suggest that the observed spin freezing is fundamentally a single spin process that is affected by the local environment, rather than the development of spin-spin correlations as earlier data suggested.

Original language	English (US)
Article number	184431
Pages (from-to)	1-6
Number of pages	6
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	70
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.70.184431
State	Published - Nov 2004
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.70.184431

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@article{d01773e86f97446683c3045fe55d37ca,

title = "Quantum and thermal spin relaxation in the diluted spin ice Dy 2-xMxTi2O7 (M=Lu, Y)",

abstract = "We have studied the low-temperature ac magnetic susceptibility of the diluted spin ice compound Dy2-xMxTi2O 7, where the magnetic Dy ions on the frustrated pyrochlore lattice have been replaced with nonmagnetic 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 nonmonotonic dependence of the quantum spin relaxation time with dilution. The results suggest that the observed spin freezing is fundamentally a single spin process that is affected by the local environment, rather than the development of spin-spin correlations as earlier data suggested.",

author = "J. Snyder and Ueland, {B. G.} and Ari Mizel and Slusky, {J. S.} and H. Karunadasa and Cava, {R. J.} and P. Schiffer",

note = "Funding Information: We gratefully acknowledge helpful discussions with D. A. Huse, A. Kent, M. Gingras, and support from the Army Research Office PECASE Grant No. DAAD19-01-1-0021 and NSF Grant No. DMR-0101318. A.M. gratefully acknowledges the support of the Packard Foundation.",

year = "2004",

month = nov,

doi = "10.1103/PhysRevB.70.184431",

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journal = "Physical Review B - Condensed Matter and Materials Physics",

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T1 - Quantum and thermal spin relaxation in the diluted spin ice Dy 2-xMxTi2O7 (M=Lu, Y)

AU - Snyder, J.

AU - Ueland, B. G.

AU - Mizel, Ari

AU - Slusky, J. S.

AU - Karunadasa, H.

AU - Cava, R. J.

AU - Schiffer, P.

N1 - Funding Information: We gratefully acknowledge helpful discussions with D. A. Huse, A. Kent, M. Gingras, and support from the Army Research Office PECASE Grant No. DAAD19-01-1-0021 and NSF Grant No. DMR-0101318. A.M. gratefully acknowledges the support of the Packard Foundation.

PY - 2004/11

Y1 - 2004/11

N2 - We have studied the low-temperature ac magnetic susceptibility of the diluted spin ice compound Dy2-xMxTi2O 7, where the magnetic Dy ions on the frustrated pyrochlore lattice have been replaced with nonmagnetic 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 nonmonotonic dependence of the quantum spin relaxation time with dilution. The results suggest that the observed spin freezing is fundamentally a single spin process that is affected by the local environment, rather than the development of spin-spin correlations as earlier data suggested.

AB - We have studied the low-temperature ac magnetic susceptibility of the diluted spin ice compound Dy2-xMxTi2O 7, where the magnetic Dy ions on the frustrated pyrochlore lattice have been replaced with nonmagnetic 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 nonmonotonic dependence of the quantum spin relaxation time with dilution. The results suggest that the observed spin freezing is fundamentally a single spin process that is affected by the local environment, rather than the development of spin-spin correlations as earlier data suggested.

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