Influence of symmetry mismatch on heteroepitaxial growth of perovskite thin films

D. L. Proffit; H. W. Jang; S. Lee; C. T. Nelson; X. Q. Pan; M. S. Rzchowski; C. B. Eom

doi:10.1063/1.2979237

Influence of symmetry mismatch on heteroepitaxial growth of perovskite thin films

D. L. Proffit, H. W. Jang, S. Lee, C. T. Nelson, X. Q. Pan, M. S. Rzchowski, C. B. Eom

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Abstract

Epitaxial thin films of (110) orthorhombic CaRuO₃ grown on orthorhombic (110) NdGaO₃ and cubic (001) (LaAlO₃) _0.3-(Sr₂AlTaO₆) 0.7 (LSAT) substrates serve as a model system isolating the influence of oxygen octahedron distortion on epitaxial growth of thin films. CaRuO₃ grows as a coherent single crystal on NdGaO₃ with an atomically smooth surface, whereas CaRuO₃ on LSAT is multidomain with a rough surface despite the equivalent film stoichoimetry and average lattice mismatch between CaRuO ₃ and the substrates. Anisotropic metallic resistivity of the single crystal CaRuO₃ was observed at 10 K with different electrical behaviors as a function of temperature for [1̄10] and [001] in-plane directions.

Original language	English
Article number	111912
Journal	Applied Physics Letters
Volume	93
Issue number	11
DOIs	https://doi.org/10.1063/1.2979237
State	Published - 2008
Externally published	Yes

Funding

The authors gratefully acknowledge the financial support of the National Science Foundation through Grant No. ECCS-0708759, Department of Energy through Grant No. DE-FG02-06ER46346, and David Lucile Packard Fellowship (CBE).

Funders	Funder number
National Science Foundation	ECCS-0708759
U.S. Department of Energy	DE-FG02-06ER46346

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10.1063/1.2979237

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title = "Influence of symmetry mismatch on heteroepitaxial growth of perovskite thin films",

abstract = "Epitaxial thin films of (110) orthorhombic CaRuO3 grown on orthorhombic (110) NdGaO3 and cubic (001) (LaAlO3) 0.3-(Sr2AlTaO6) 0.7 (LSAT) substrates serve as a model system isolating the influence of oxygen octahedron distortion on epitaxial growth of thin films. CaRuO3 grows as a coherent single crystal on NdGaO3 with an atomically smooth surface, whereas CaRuO3 on LSAT is multidomain with a rough surface despite the equivalent film stoichoimetry and average lattice mismatch between CaRuO 3 and the substrates. Anisotropic metallic resistivity of the single crystal CaRuO3 was observed at 10 K with different electrical behaviors as a function of temperature for [{\=1}10] and [001] in-plane directions.",

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AU - Proffit, D. L.

AU - Jang, H. W.

AU - Lee, S.

AU - Nelson, C. T.

AU - Pan, X. Q.

AU - Rzchowski, M. S.

AU - Eom, C. B.

PY - 2008

Y1 - 2008

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AB - Epitaxial thin films of (110) orthorhombic CaRuO3 grown on orthorhombic (110) NdGaO3 and cubic (001) (LaAlO3) 0.3-(Sr2AlTaO6) 0.7 (LSAT) substrates serve as a model system isolating the influence of oxygen octahedron distortion on epitaxial growth of thin films. CaRuO3 grows as a coherent single crystal on NdGaO3 with an atomically smooth surface, whereas CaRuO3 on LSAT is multidomain with a rough surface despite the equivalent film stoichoimetry and average lattice mismatch between CaRuO 3 and the substrates. Anisotropic metallic resistivity of the single crystal CaRuO3 was observed at 10 K with different electrical behaviors as a function of temperature for [1̄10] and [001] in-plane directions.

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Influence of symmetry mismatch on heteroepitaxial growth of perovskite thin films

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