Effect of Interfacial Octahedral Behavior in Ultrathin Manganite Films

Published

May 14, 2014

Author(s)

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

Abstract

We investigate structural coupling of the MnO₆ octahedra across a film/substrate interface and the resultant changes of the physical properties of ultrathin La_2/3}Sr_1/3}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.

Citation

Physical Review Letters

Volume

14

Pub Type

Journals

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Keywords

PNR, complex oxides, magnetic multilayers

Citation

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], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=915151 (Accessed September 18, 2024)