材料期刊网

An anisotropic layered mode structure composed of line groups as an approach to anisotropic bilayered manganites is constructed based on the elementary interactions existing in the bilayered manganites. The anisotropic electronic transport and magnetic behaviors of the mode structure are investigated using Monte Carlo simulation and the microscopic resistor network scheme in Ising model. The simulation reproduces qualitatively the main characteristic transport behaviors of bilayered manganites. The significant anisotropy in resistivity and ferromagnetic orderings along different orientations is observed, and the underlying physics is discussed in the framework of spatial correlation of the microscopic metallic resistor network. The simulated results are believed to cast some light on the understanding of the anomaly in the transport behaviors of bilayered manganites, which are gaining more and more importance.