Phase coexistence and resistivity near the ferromagnetic transition of manganites

Abstract

Pairing of oxygen holes into heavy bipolarons in the paramagnetic phase and their magnetic pair-breaking in the ferromagnetic phase [the so-called current-carrier density collapse (CCDC)] has accounted for the first-order ferromagnetic phase transition, colossal magnetoresistance (CMR), isotope effect, and pseudogap in doped manganites. Here we propose an explanation of the phase coexistence and describe the magnetization and resistivity of manganites near the ferromagnetic transition in the framework of CCDC. The present quantitative description of resistivity is obtained without any fitting parameters by using the experimental resistivities far away from the transition and the experimental magnetization, and essentially model independent.

arXiv comment10 pages, 3 figures

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Cited by in corpus (9)

• Sequential Electronic and Structural Transitions in VO2 Observed Using X-ray Absorption Spectromicroscopy
• Polaron Coherence Condensation as the Mechanism for Colossal Magnetoresistance in Layered Manganites
• Correlation Between Phase Competition and the Nucleation of a Griffiths Phase in (La1-yPry)0.7Ca0.3Mn16/18O3
• Colossal Magnetoresistance Observed in Monte Carlo Simulations of the One- and Two-Orbital Models for Manganites
• The phase transition in VO2 probed using x-ray, visible and infrared radiations
• Self-organization of charged particles on a 2D lattice subject to anisotropic Jahn-Teller-type interaction and 3D Coulomb repulsion
• Scaling of NonOhmic Conduction in Strongly Correlated Systems
• Direct Correlation between 1/f-magneto-noise and magnetoresistance in La0.7Sr0.3MnO3 and (La0.5Pr0.2)Ba0.3MnO3 manganites
• Polaron and bipolaron transport in a charge segregated state of doped strongly correlated 2D semiconductor