Journal
PHYSICAL REVIEW LETTERS
Volume 108, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.207206
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Funding
- NSF through the Cooperative Agreement [DMR-0654118]
- State of Florida
- NSERC
- CFI
- ACS Petroleum Fund
- NSF [DMR-0904282, DMR-1122603]
- Robert A. Welch Foundation [F-1066]
- DOE-BES [DE-SC0002613]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [904282, 1122603] Funding Source: National Science Foundation
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A comparison among the two sets of studied pyrochlore spin ices, Ho2Sn2O7, Ho2Ti2O7, and Ho2Ge2O7 with Ho3+ spins and Dy2Sn2O7, Dy2Ti2O7, and Dy2Ge2O7 with Dy3+ spins, shows that the application of chemical pressure through each set drives the system toward the antiferromagnetic phase boundary from the spin ice region, which agrees with the prediction of the dipolar spin ice model of den Hertog and Gingras. Among all the studied pyrochlore spin ices, Dy2Ge2O7 has the smallest ratio of J(nn)/D-nn = -0.73.
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