Ordering Phenomena in Transition Metal Oxides

Bulk sensitive PES, ARPES and RIXS of some transition metal (Cu, Mn, V and Ru) oxides   

Bulk electronic structures of strongly correlated electron systems are often much different from surface electronic structures probed by low energy photoemission spectroscopy (PES). Soft X-ray PES is effectively applied to the study of bulk electronic structures of Nd_1-xSr_xMnO₃,¹⁾ where microscopic and dynamic phase segregation is observed.
Angle resolved soft X-ray photoemission (ARPES) is applied to probe the dispersion associated with the metal-insulator transition in V₆O₁₃ and to probe bulk Fermi surfaces of high Tc cuprates as well as Sr₂RuO_4, clarifying essential differences from the surface region.
Resonant inelastic X-ray scattering (RIXS) is a really bulk sensitive probe to see the momentum resolved low energy excitations even in insulators. RIXS near the Cu 1s edge is measured for the quasi-1D Cu-O chain system, CuGeO₃ and Sr₂CuO₃, where clear differences are observed reflecting the edge sharing and corner sharing geometry.

1) A.Sekiyama et al., to be published.