Dielectrophoresis model for the colossal electroresistance of phase-separated manganites

Abstract

We propose a dielectrophoresis model for phase-separated manganites. Without increase of the fraction of metallic phase, an insulator-metal transition occurs when a uniform electric field applied across the system exceeds a threshold value. Driven by the dielectrophoretic force, the metallic clusters reconfigure themselves into stripes along the direction of electric field, leading to the filamentous percolation. This process, which is time-dependent, irreversible and anisotropic, is a probable origin of the colossal electroresistance in manganites.

arXiv comment4 pages, 5 figures

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Cited by in corpus (10)

• Ferromagnetic tendency at the surface of CE charge-ordered manganites
• Recent Progress of Multiferroic Perovskite Manganites
• Highly anisotropic resistivities in the double-exchange model for strained manganites
• Dynamics of a first order electronic phase transition in manganites
• Colossal electroresistance and colossal magnetoresistive step in paramagnetic insulating phase of single crystalline bilayered manganite(La${}_{0.4}$Pr${}_{0.6}$)${}_{1.2}$Sr${}_{1.8}$Mn${}_2$O${}_7$
• Interfacial Phase Competition Induced Kondo-like Effect in Manganite-insulator Composites
• Dynamic percolation of ferromagnetic regions in phase separated manganites using non-uniform electric fields
• Magnetic field induced dielectric relaxation in the strain glass state of Pr0.6Ca0.4MnO3
• Topological end states in two-orbital double-exchange model for colossal magnetoresistive manganites
• Inhomogeneous Phases in a Double-Exchange Magnet with Long Range Coulomb Interactions