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Effect of Interfacial Octahedral Behavior in Ultrathin Manganite Films



E. J. Moon, P. V. Balachandran, Brian Kirby, D.J. Keavney, R.J. Sichel-Tissot, C. M. Schleputz, E. Karapetrova, X. M. Cheng, James M. Rondinelli, S. J. May


We investigate structural coupling of the MnO6 octahedra across a film/substrate interface and the resultant changes of the physical properties of ultrathin La2/3}Sr1/3}MnO3 (LSMO) films. In order to isolate the effect of interfacial MnO6 octahedral behavior from that of epitaxial strain, LSMO films are grown on substrates with different symmetry and similar lattice parameters. Ultra thin LSMO films show show an increased magnetization and electrical conductivity on cubic (LaAlO3)d0.3^(Sr2AlTaO6)0.7 (LSAT) compared to those grown on orthorhombic NdGaO3 (NGO) substrates, an effect that subsides as the thickness of the films is increased. This study demonstrates that interfacial structural coupling can play a critical role in the functional properties of oxide heterostructures.
Physical Review Letters


PNR, complex oxides, magnetic multilayers


Moon, E. , Balachandran, P. , Kirby, B. , Keavney, D. , Sichel-Tissot, R. , Schleputz, C. , Karapetrova, E. , Cheng, X. , Rondinelli, J. and May, S. (2014), Effect of Interfacial Octahedral Behavior in Ultrathin Manganite Films, Physical Review Letters, [online], (Accessed April 16, 2024)
Created May 13, 2014, Updated October 12, 2021