TY - JOUR
T1 - Magnetocapacitance in nonmagnetic composite media
AU - Parish, Meera M.
AU - Littlewood, Peter B.
PY - 2008/10/17
Y1 - 2008/10/17
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=55049092423&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.101.166602
DO - 10.1103/PhysRevLett.101.166602
M3 - Article
AN - SCOPUS:55049092423
SN - 0031-9007
VL - 101
JO - Physical Review Letters
JF - Physical Review Letters
IS - 16
M1 - 166602
ER -