Magnetocapacitance in nonmagnetic composite media

Meera M. Parish, Peter B. Littlewood

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47 Citations (Scopus)

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.

Original languageEnglish
Article number166602
JournalPhysical Review Letters
Volume101
Issue number16
DOIs
Publication statusPublished - 17 Oct 2008
Externally publishedYes

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