Anisotropic O 2p-Mn 3d unoccupied states in La1−xMnO3: an X-ray absorption spectroscopy study

XAS study of Ru doped n=1, 2 Ruddlesden–Popper manganites

“…For the K (L 2,3 ) edge the absorption coefficient in the vicinity of the absorption edge is roughly proportional to the density of ptype (d-type) unoccupied states. Therefore, XAS spectra can be regarded as fingerprints of different valence states of elements, in particular Mn, in solids [5][6][7][8].Most XAS results presented in this paper are based on the measurements at the Mn:L 2,3 and O:K edges, which were carried out on the BACH beamline in ELETTRA, Trieste, Italy. Powder samples of Sr 3 MnRuO 7 and Sr 2 Mn 0.5 Ru 0.5 O 4 were measured at room temperature by means of TEY (total electron yield) detection techniqe.…”

“…For the K (L 2,3 ) edge the absorption coefficient in the vicinity of the absorption edge is roughly proportional to the density of ptype (d-type) unoccupied states. Therefore, XAS spectra can be regarded as fingerprints of different valence states of elements, in particular Mn, in solids [5][6][7][8].…”