Charge and spin inhomogeneous phases in the Ferromagnetic Kondo Lattice Model

Abstract

We study numerically the one-dimensional ferromagnetic Kondo lattice. This model is widely used to describe nickel and manganese perovskites. Due to the competition between double and super-exchange, we find a region where the formation of magnetic polarons induces a charge-ordered state. This ordering is present even in the absence of any inter-site Coulomb repulsion. There is an insulating gap associated to the charge structure formation. We also study the insulator-metal transition induced by a magnetic field which removes simultaneously both charge and spin ordering.

arXiv comment7 pages, 11 figures

References in corpus (13)

• Phase Separation in Electronic Models for Manganites
• Impact of Charge Ordering on Magnetic Correlations in Perovskite (Bi,Ca)MnO_3
• Phase Separation Induced by Orbital Degrees of Freedom in Models for Manganites with Jahn-Teller Phonons
• Double-exchange model: phase separation versus canted spins
• Static and Dynamical Properties of the Ferromagnetic Kondo Model with Direct Antiferromagnetic Coupling Between the localized $t_{2g}$ Electrons
• Ferromagnetism in Electronic Models for Manganites
• New Type of Charge and Magnetic order in the Ferromagnetic Kondo Lattice
• Quantum Phase Diagram of the t-Jz Chain Model
• Specific Heat of defects in the Haldane System Y_2BaNiO_5
• Monte Carlo determination of the phase diagram of the double-exchange model
• Influence of Nearest-Neighbor Coulomb Interactions on the Phase Diagram of the Ferromagnetic Kondo Model
• Ferromagnetic Polarons in Manganites
• Phase diagram for Ca_{1-x}Y_xMnO_3 type crystals

Cited by in corpus (16)

• The density-matrix renormalization group
• New Trends in Density Matrix Renormalization
• Exotic magnetic order in the orbital-selective Mott regime of multiorbital systems
• The one dimensional Kondo lattice model at partial band filling
• Spin order in the one-dimensional Kondo and Hund lattices
• Novel Magnetic Block States in Low-Dimensional Iron-Based Superconductors
• Photoinduced charge and spin dynamics in strongly correlated electron systems
• Ferromagnetic polarons in the one-dimensional ferromagnetic Kondo model with quantum mechanical S=3/2 core spins
• Magnetic Polarons in the 1D FM Kondo Model
• Numerical Study of Photo-Induced Dynamics in Double-Exchange Model
• Spin and lattice effects in the Kondo lattice model
• Magnetic polaron structures in the one-dimensional double and super-exchange model
• Time-dependent local Green's operator and its applications to manganites
• Ferrimagnetism Induced by Off-Site Coulomb Interaction in an Itinerant Electron System
• Aspects of the FM Kondo Model: From Unbiased MC Simulations to Back-of-an-Envelope Explanations
• Spin-polarons in an exchange model