Novel effects of localization due to `intrinsic disorder' in the `two-fluid' model for manganites

Abstract

We discuss the effects of a novel polaronic disorder in the recently proposed two-fluid model for manganites. Using effective field theory as well as direct numerical simulations, we show that this disorder can have dramatic effects in terms of the transition from ferromagnetic insulator to ferromagnetic metal upon hole-doping, including an Anderson localized regime where variable range hopping may be observed.

arXiv comment6 pages, 4 figures

References in corpus (10)

• Exact solution of the Falicov-Kimball model with dynamical mean-field theory
• Relevance of Cooperative Lattice Effects and Correlated Disorder in Phase-Separation Theories for CMR Manganites
• Theory of Insulator Metal Transition and Colossal Magnetoresistance in Doped Manganites
• Observation of two time scales in the ferromagnetic manganite La(1-x)Ca(x)MnO(3), x = 0.3
• Coulomb Interactions and Nanoscale Electronic Inhomogeneities in Manganites
• The Density of States of hole-doped Manganites: A Scanning Tunneling Microscopy/Spectroscopy study
• Insulator-Metal Phase Diagram of the Optimally Doped Manganites from the Disordered Holstein-Double Exchange Model
• Zero Temperature Insulator-Metal Transition in Doped Manganites
• Long Range Coulomb Interactions and Nanoscale Electronic Inhomogeneities in Correlated Oxides
• Disorder-induced orbital ordering in doped manganites