Electronic and magnetic properties of the (001) surface of hole-doped manganites

Abstract

The electronic and magnetic properties of ferromagnetic doped manganites are investigated by means of model tight-binding and \textit{ab initio} self-interaction corrected local spin density approximation calculations. It is found that the surface alone by breaking the cubic symmetry induces a difference in the occupation of the two $e_g$ orbitals at the surface. With \textit{ab initio} calculations we found surface localisation of one orbital and hence a change in the Mn valency from four in the bulk to three at the sub-surface. Different surface or disordered interface induced localisation of the orbitals are considered too with respect to the nature and the strength of the magnetic exchange coupling between the surface/interface and the bulk-like region.

7 pages, 5 figures

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Cited by in corpus (14)

• Evidence of orbital reconstruction at interfaces in La0.67Sr0.33MnO3 films
• Ferromagnetic tendency at the surface of CE charge-ordered manganites
• Ab-initio electronic and magnetic structure in La_0.66Sr_0.33MnO_3: strain and correlation effects
• Nanoscale Suppression of Magnetization at Atomically Assembled Manganite Interfaces
• Electronic Phase Separation in Manganite/Insulator Interfaces
• Insulating phase at low temperature in ultrathin La0.8Sr0.2MnO3 films
• Ferrodistortive instability at the (001) surface of half-metallic manganites
• Enhancing interfacial magnetization with a ferroelectric
• Suppressed Magnetization at the Surfaces and Interfaces of Ferromagnetic Metallic Manganites
• Orbital ordering in cubic LaMnO3 from first principles calculations
• Magnetic Domain Structure of La0.7Sr0.3MnO3 thin-films probed at variable temperature with Scanning Electron Microscopy with Polarization Analysis
• Magnetic order and valency at La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$/SrTiO${}_3$ interfaces
• Unusual ferromagnetism in nanoparticles of doped oxides and manganites
• Interfacial reconstruction effects in insulating double perovskite Nd${}_2$NiMnO${}_6$/SrTiO${}_3$ and Nd${}_2$NiMnO${}_6$/NdGaO${}_3$ thin films