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arXiv · 1308.2049

A Scaling Theory for ac Magnetic Response in Kagome Ice

Hiromi Otsuka·Hiroshi Takatsu·Kazuki Goto·Hiroaki Kadowaki
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Abstract

A theory for frequency-dependent magnetic susceptibility χ(ω) is developed for thermally activated magnetic monopoles in kagome ice. By mapping this system to a two-dimensional (2D) Coulomb gas and then to a sine-Gordon model, we have shown that the susceptibility has a scaling form χ(ω)/χ(0)={\cal F}(ω/ω_1), where the characteristic ω_1 is related to a charge correlation length between diffusively moving monopoles, and to the sine-Gordon principal breather. The dynamical scaling is universal among superfluid and superconducting films, and 2D XY magnets above Kosterlitz-Thouless transitions.

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Hiromi Otsuka, Hiroshi Takatsu, Kazuki Goto, Hiroaki Kadowaki. 2013-08-09. A Scaling Theory for ac Magnetic Response in Kagome Ice. https://arxiv.org/abs/1308.2049

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