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arXiv · 1011.3659

Dynamic susceptibility of a spin ice near the critical point

A. V. Shtyk·M. V. Feigelman
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Abstract

We consider spin ice magnets (primarily, $\mathrm{Dy_2Ti_2O_7}$) in the vicinity of their critical point on the $(H,T)$ plane. We find that the longitudinal susceptibility diverges at the critical point, leading to the behaviour qualitatively similar to the one which would result from non-zero conductance of magnetic charges. We show that dynamics of critical fluctuations belongs to the universality class of easy-axis ferroelectric and calculate logarithmic corrections (within two-loop approximation) to the mean-field critical behavior.

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A. V. Shtyk, M. V. Feigelman. 2010-11-16. Dynamic susceptibility of a spin ice near the critical point. https://doi.org/10.1134/s0021364010240045

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