Half-Metallicity of LSMO

Abstract

Self-interaction corrected local spin density approximation calculations were performed for La${}_{(1-x)}$Sr${}_x$MnO${}_3$ (LSMO) ($0.0<x<0.5$). The influence and inter-relationship of Sr doping, magnetic structure, O displacements and phase segregation on the Mn charge state were studied. A half-metallic state was obtained for LSMO with manganese configuration Mn${}^{3+}$, whilst Mn${}^{4+}$ gave rise to a metallic state with a negligible spin polarisation at the Fermi level. Elongating the MnO${}_6$ octahedron led to a static mixed valence Mn${}^{3+}$/Mn${}^{4+}$ configuration. In the mixed valence state the total energy was minimized by an ordered array of Mn${}^{4+}$ and Mn${}^{3+}$ MnO${}_2$ planes which showed charge ordered stripes.

13 pages, 6 figures

References in corpus (5)

• Nearly total spin polarization in La2/3Sr1/3MnO3 from tunneling experiments
• How to calculate the degree of spin polarization in ferromagnets?
• Structural, magnetic and electrical properties of single crystalline La_(1-x)Sr_xMnO_3 for 0.4 < x < 0.85
• The origin of high transport spin polarization in La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$: direct evidence for minority spin states
• Dynamical mean field theory for transition temperature and optics of CMR manganites

Cited by in corpus (6)

• Self-interaction correction in multiple scattering theory
• Spin-polarized tunneling spectroscopy in tunnel junctions with half-metallic electrodes
• Ab-initio electronic and magnetic structure in La_0.66Sr_0.33MnO_3: strain and correlation effects
• Electronic and magnetic properties of the (001) surface of hole-doped manganites
• Magnetic order and valency at La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$/SrTiO${}_3$ interfaces
• Pressure Induced Charge Disproportionation in LaMnO${}_3$