Crystal-field level inversion in lightly Mn-doped Sr 3 Ru 2 O 7

• Verfasst von: Hossain, Suman [VerfasserIn]
• Verfasst von: Haverkort, Maurits W. [VerfasserIn]
• Titel: Crystal-field level inversion in lightly Mn-doped Sr 3 Ru 2 O 7
• Verf.angabe: M.A. Hossain, Z. Hu, M.W. Haverkort, T. Burnus, C.F. Chang, S. Klein, J.D. Denlinger, H.-J. Lin, C.T. Chen, R. Mathieu, Y. Kaneko, Y. Tokura, S. Satow, Y. Yoshida, H. Takagi, A. Tanaka, I.S. Elfimov, G.A. Sawatzky, L.H. Tjeng, and A. Damascelli
• Fussnoten: Die Ziffern "3", "2" und "7" im Titel sind tiefgestellt ; Gesehen am 07.11.2017
• Titel Quelle: Enthalten in: Physical review letters
• Jahr Quelle: 2008
• Band/Heft Quelle: 101(2008,1) Artikel-Nummer 016404, 4 Seiten
• ISSN Quelle: 1079-7114
• DOI: doi:10.1103/PhysRevLett.101.016404
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565099230

Abstract

Sr3(Ru1−xMnx)2O7, in which 4d-Ru is substituted by the more localized 3d-Mn, is studied by x-ray dichroism and spin-resolved density functional theory. We find that Mn impurities do not exhibit the same 4+ valence of Ru, but act as 3+ acceptors; the extra eg electron occupies the in-plane 3dx2−y2 orbital instead of the expected out-of-plane 3d3z2−r2. We propose that the 3d−4d interplay, via the ligand oxygen orbitals, is responsible for this crystal-field level inversion and the material’s transition to an antiferromagnetic, possibly orbitally ordered, low-temperature state.