Comment on "Short-range magnetic interactions in the spin-ice compound Ho2Ti2O7"
O.A. Petrenko, M.R. Lees, G. Balakrishnan
TL;DR
This paper re-examines magnetization data of Ho2Ti2O7, confirming that its magnetic moments follow the spin-ice model, contrary to previous reports suggesting deviation from the ice-rule.
Contribution
It provides experimental evidence supporting the nearest-neighbor spin-ice model for Ho2Ti2O7, clarifying previous conflicting observations.
Findings
Magnetization curves align with spin-ice model predictions
Magnetic moments obey the ice-rule in Ho2Ti2O7
Re-measurements resolve previous discrepancies
Abstract
In their recent communication (Phys. Rev. B 64, 060406(R) (2001)) Cornelius and Gardner have reported the results of magnetization and susceptibility studies on single crystals of the pyrochlore Ho2Ti2O7. The observed field dependence of magnetization is totally unexpected, as it seems to suggest that the magnetic moments in this compound do not obey the 'ice-rule'. We have re-measured the magnetization curves for Ho2Ti2O7 single crystal for the three principal directions of an applied magnetic field and found nearly perfect agreement with the predictions for a nearest-neighbor spin-ice model.
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