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Magnetocapacitance in Nonmagnetic Composite Media

Parish, MM; Littlewood, PB; (2008) Magnetocapacitance in Nonmagnetic Composite Media. PHYS REV LETT , 101 (16) , Article 166602. 10.1103/PhysRevLett.101.166602. Green open access

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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.

Type: Article
Title: Magnetocapacitance in Nonmagnetic Composite Media
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.101.166602
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.101.166602
Language: English
Additional information: © 2008 The American Physical Society
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1332990
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