Cobaltites: Emergence of Magnetism and Metallicity from a Non-magnetic, Insulating State

A-site antiferromagnetic atomic structure bond length Bragg peak Bragg reflection chapter co-existence Co-O peak Co-O-Co angles Co-O-Co bond angles Co¹ Co³ cobaltites CoO3 correlation length crystal structure cuprates dependence dopants doping electrons energy ferromagnetic clusters ferromagnetic ordering ferromagnetic phase ferromagnetic scattering ferromagnetic spin correlations Figure fluctuating function Gaussian Gaussian functions hole concentration hole-doped incommensurate peaks incommensurate phase incommensurate scattering incommensurate signal incommensurate spin correlations increases indicates inelastic continuum insulating insulator-metal transition intensity interaction J-T active ions J-T distortions Jahn-Teller distortions La³ LaCoO3 lattice LCCO and LBCO low temperature LS-HS LSCO magnetic moments magnetic phase magnetopolarons manganites measured metallic neutron diffraction neutron scattering experiment non-magnetic observed orbital order parameter orthorhombic oxygen paramagnetic peak position perovskite phase diagram Phys plane Pnma Q-scan rhombohedral Rietveld refinement sample satellite peaks short-range shown in Fig significantly spin-glass spin-state transition spin-wave tolerance factor trigonal distortion triple-axis spectrometer unit cell