Linear dichroism (LD) in x-ray absorption, diffraction, transport, and magnetization measurements on thin La0.7Sr0.3MnO3 films grown on different substrates, allow identification of a peculiar interface effect, related just to the presence of the interface. We report the LD signature of preferential 3d -e(g) (3z(2) - r(2)) occupation at the interface, suppressing the double exchange mechanism. This surface orbital reconstruction is opposite to that favored by residual strain and is independent of dipolar fields, the chemical nature of the substrate and the presence of capping layers.

Tebano, A., Aruta, C., Sanna, S., Medaglia, P.g., Balestrino, G., Sidorenko, A.a., et al. (2008). Evidence of orbital reconstruction at interfaces in ultrathin La0.67Sr0.33MnO3 films. PHYSICAL REVIEW LETTERS, 100 [10.1103/PhysRevLett.100.137401].

Evidence of orbital reconstruction at interfaces in ultrathin La0.67Sr0.33MnO3 films

TEBANO, ANTONELLO;MEDAGLIA, PIER GIANNI;BALESTRINO, GIUSEPPE;
2008-01-01

Abstract

Linear dichroism (LD) in x-ray absorption, diffraction, transport, and magnetization measurements on thin La0.7Sr0.3MnO3 films grown on different substrates, allow identification of a peculiar interface effect, related just to the presence of the interface. We report the LD signature of preferential 3d -e(g) (3z(2) - r(2)) occupation at the interface, suppressing the double exchange mechanism. This surface orbital reconstruction is opposite to that favored by residual strain and is independent of dipolar fields, the chemical nature of the substrate and the presence of capping layers.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/03 - Fisica della Materia
English
diffraction; magnetization; X ray absorption; dipolar fields; linear dichroism (LD); orbital reconstruction; ultrathin films
Article number: 137401
Tebano, A., Aruta, C., Sanna, S., Medaglia, P.g., Balestrino, G., Sidorenko, A.a., et al. (2008). Evidence of orbital reconstruction at interfaces in ultrathin La0.67Sr0.33MnO3 films. PHYSICAL REVIEW LETTERS, 100 [10.1103/PhysRevLett.100.137401].
Tebano, A; Aruta, C; Sanna, S; Medaglia, Pg; Balestrino, G; Sidorenko, Aa; De, R; R, ; Ghiringhelli, G; Braicovich, L; Bisogni, V; Brookes, Nb
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/33454
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