Oxygen octahedron reconstruction in the SrTiO3/LaAlO3 heterointerfaces investigated using aberration-corrected ultrahigh-resolution transmission electron microscopy

C. L. Jia; S. B. Mi; M. Faley; U. Poppe; J. Schubert; K. Urban

doi:10.1103/PhysRevB.79.081405

Oxygen octahedron reconstruction in the SrTiO₃/LaAlO₃ heterointerfaces investigated using aberration-corrected ultrahigh-resolution transmission electron microscopy

C. L. Jia
, S. B. Mi
, M. Faley
, U. Poppe
, J. Schubert
, K. Urban

Jülich Research Centre

Research output: Contribution to journal › Article › peer-review

201 Scopus citations

Abstract

We investigate the LaAlO₃/SrTiO₃ interface by means of aberration-corrected ultrahigh-resolution transmission electron microscopy allowing us to measure the individual atomic shifts in the interface at a precision of a few picometers. We find that the oxygen octahedron rotation typical for rhombohedral LaAlO₃ is across the interface and is also induced in the originally cubic SrTiO₃ layer. Octahedra distortion leads to ferroelectricitylike dipole formation in the interface which is in addition modified by cation intermixing.

Original language	English
Article number	081405
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	79
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.79.081405
State	Published - 12 Feb 2009
Externally published	Yes

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10.1103/PhysRevB.79.081405

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Jia, C. L., Mi, S. B., Faley, M., Poppe, U., Schubert, J., & Urban, K. (2009). Oxygen octahedron reconstruction in the SrTiO₃/LaAlO₃ heterointerfaces investigated using aberration-corrected ultrahigh-resolution transmission electron microscopy. Physical Review B - Condensed Matter and Materials Physics, 79(8), Article 081405. https://doi.org/10.1103/PhysRevB.79.081405

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abstract = "We investigate the LaAlO3/SrTiO3 interface by means of aberration-corrected ultrahigh-resolution transmission electron microscopy allowing us to measure the individual atomic shifts in the interface at a precision of a few picometers. We find that the oxygen octahedron rotation typical for rhombohedral LaAlO3 is across the interface and is also induced in the originally cubic SrTiO3 layer. Octahedra distortion leads to ferroelectricitylike dipole formation in the interface which is in addition modified by cation intermixing.",

author = "Jia, \{C. L.\} and Mi, \{S. B.\} and M. Faley and U. Poppe and J. Schubert and K. Urban",

year = "2009",

month = feb,

day = "12",

doi = "10.1103/PhysRevB.79.081405",

language = "英语",

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journal = "Physical Review B - Condensed Matter and Materials Physics",

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Oxygen octahedron reconstruction in the SrTiO₃/LaAlO₃ heterointerfaces investigated using aberration-corrected ultrahigh-resolution transmission electron microscopy. / Jia, C. L.; Mi, S. B.; Faley, M. et al.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 79, No. 8, 081405, 12.02.2009.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Oxygen octahedron reconstruction in the SrTiO3/LaAlO3 heterointerfaces investigated using aberration-corrected ultrahigh-resolution transmission electron microscopy

AU - Jia, C. L.

AU - Mi, S. B.

AU - Faley, M.

AU - Poppe, U.

AU - Schubert, J.

AU - Urban, K.

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AB - We investigate the LaAlO3/SrTiO3 interface by means of aberration-corrected ultrahigh-resolution transmission electron microscopy allowing us to measure the individual atomic shifts in the interface at a precision of a few picometers. We find that the oxygen octahedron rotation typical for rhombohedral LaAlO3 is across the interface and is also induced in the originally cubic SrTiO3 layer. Octahedra distortion leads to ferroelectricitylike dipole formation in the interface which is in addition modified by cation intermixing.

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U2 - 10.1103/PhysRevB.79.081405

DO - 10.1103/PhysRevB.79.081405

M3 - 文章

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SN - 1098-0121

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 8

M1 - 081405

ER -

Oxygen octahedron reconstruction in the SrTiO₃/LaAlO₃ heterointerfaces investigated using aberration-corrected ultrahigh-resolution transmission electron microscopy

Abstract

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