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Electronic band redistribution probed by oxygen absorption spectra of (SrMnO3)(n)( LaMnO3)(2n) superlattices (Articolo in rivista)

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Electronic band redistribution probed by oxygen absorption spectra of (SrMnO3)(n)( LaMnO3)(2n) superlattices (Articolo in rivista) (literal)

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A.Galdi, C.Aruta, P.Orgiani, C.Adamo, V.Bisogni, N.B.Brookes, G.Ghiringhelli, D.G.Schlom, P.Thakur, L.Maritato (2012)
Electronic band redistribution probed by oxygen absorption spectra of (SrMnO3)(n)( LaMnO3)(2n) superlattices
in Physical review. B, Condensed matter and materials physics; American Physical Society (APS), College Pk (Stati Uniti d'America)
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A.Galdi, C.Aruta, P.Orgiani, C.Adamo, V.Bisogni, N.B.Brookes, G.Ghiringhelli, D.G.Schlom, P.Thakur, L.Maritato (literal)

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1. CNR SPIN Superconductors Oxides & Other Innovat M, I-84084 Fisciano, SA, Italy 2. Univ Salerno, I-84084 Fisciano, SA, Italy 3. CNR SPIN Superconductors Oxides & Other Innovat M, I-80126 Naples, Italy 4. Dept Phys Sci, I-80126 Naples, Italy 5. Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA 6. European Synchrotron Radiat Facil, F-38043 Grenoble, France 7. CNR SPIN Superconductors Oxides & Other Innovat M, I-20133 Milan, Italy 8. Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy 9. Kavli Inst Cornell Nanoscale Sci, Ithaca, NY 14853 USA (literal)

Titolo

Electronic band redistribution probed by oxygen absorption spectra of (SrMnO3)(n)( LaMnO3)(2n) superlattices (literal)

Abstract

Oxygen 1s -> 2p (K-edge) x-ray absorption spectra mimic the density of metalliclike states of transition metal oxides, thus shedding light on the electronic band structure near Fermi energies of these compounds. We take here advantage of x-ray linear dichroism measurements at the O K edge of different (SrMnO3)(n)(LaMnO3)(2n) superlattices, of SrMnO3 and of LaMnO3 thin films. X-ray linear dichroism, in the pre-edge region of the spectra, provides evidence about the specific symmetry of the Mn 3d orbitals hybridized with the oxygen ions, thus allowing us to disentangle the pure interface contribution from those related to strain effect and charge leakage among the superlattices' constituent blocks (literal)

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