Magnetic field-dependent dielectric constant in La2/3Ca1/3MnO3

Details Magnetic field-dependent dielectric constant in La2/3Ca1/3MnO3 Magnetic field-dependent dielectric constant in La2/3Ca1/3MnO3

2006-03-24

arxiv.org/abs/cond-mat/0603660v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 figures

Scientific paper

10.1063/1.2213513

We report a rather high dependence of the dielectric permittivity on the magnetic field in La2/3Ca1/3MnO3. The variation is maximum at around 270 K, little above the Curie temperature, TC, and it reaches a 30% under only 0.5 T. We attribute this phenomenon to the space-charge or interfacial polarization produced between the insulator and the metallic regions segregated intrinsically in the material above TC.

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