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arXiv · 0807.3625

Magnetocapacitance in non-magnetic inhomogeneous media

Meera M. Parish·Peter B. Littlewood
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Abstract

The dielectric response in a magnetic field is routinely used to probe the existence of coupled magnetic and elastic order in the multiferroics. However, here we demonstrate that magnetism is not necessary to produce a magnetocapacitance when the material is inhomogeneous. By considering a two-dimensional, two-component composite medium, we find a characteristic dielectric resonance that depends on magnetic field. We propose this as a possible signature of inhomogeneities and we argue that this behavior has already been observed in nanoporous silicon and some manganites.

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Meera M. Parish, Peter B. Littlewood. 2008-07-23. Magnetocapacitance in non-magnetic inhomogeneous media. https://doi.org/10.1103/physrevlett.101.166602

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