Suppression of Octahedral Tilts and Associated Changes in Electronic Properties at Epitaxial Oxide Heterostructure Interfaces

被引：296

作者：

Borisevich, A. Y. ^{[1
]}

Chang, H. J. ^{[1
]}

Huijben, M. ^{[2
,3
,4
]}

Oxley, M. P. ^{[1
]}

Okamoto, S. ^{[1
]}

Niranjan, M. K. ^{[5
]}

Burton, J. D. ^{[5
]}

Tsymbal, E. Y. ^{[5
]}

Chu, Y. H. ^{[6
]}

Yu, P. ^{[2
,3
]}

Ramesh, R. ^{[2
,3
]}

Kalinin, S. V. ^{[1
]}

Pennycook, S. J. ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

[4] Univ Twente, MESA Inst Nanotechnol, Fac Sci & Technol, NL-7500 AE Enschede, Netherlands

[5] Univ Nebraska, Nebraska Ctr Mat & Nanosci, Dept Phys & Astron, Lincoln, NE 68588 USA

[6] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 08期

关键词：

FERROELECTRIC-FILMS; SCALE;

D O I：

10.1103/PhysRevLett.105.087204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Epitaxial oxide interfaces with broken translational symmetry have emerged as a central paradigm behind the novel behaviors of oxide superlattices. Here, we use scanning transmission electron microscopy to demonstrate a direct, quantitative unit-cell-by-unit-cell mapping of lattice parameters and oxygen octahedral rotations across the BiFeO(3)-La(0.7)Sr(0.3)MnO(3) interface to elucidate how the change of crystal symmetry is accommodated. Combined with low-loss electron energy loss spectroscopy imaging, we demonstrate a mesoscopic antiferrodistortive phase transition near the interface in BiFeO(3) and elucidate associated changes in electronic properties in a thin layer directly adjacent to the interface.

引用

页数：4

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