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

Journal Article · Fri Jan 01 04:00:00 EST 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.105.087204· OSTI ID:985771

Borisevich, Albina Y ^[1]; Chang, Hye Jung ^[1]; Huijben, Mark ^[2]; Oxley, Mark P ^[1]; Okamoto, Satoshi ^[1]; Niranjan, M K ^[3]; Burton, J D ^[3]; Tsymbal, E Y ^[3]; Chu, Ying-Hao ^[4]; Yu, P ^[5]; Ramesh, R. ^[5]; Kalinin, Sergei V ^[1]; Pennycook, Stephen J ^[1]

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1. ORNL
2. University of Twente, Enschede, Netherlands
3. University of Nebraska, Lincoln
4. National Chiao Tung University, Hsinchu, Taiwan
5. University of California, Berkeley

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{sub 3{sup -}}La{sub 0.7}Sr{sub 0.3}MnO{sub 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{sub 3} and elucidate associated changes in electronic properties in a thin layer directly adjacent to the interface.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 985771
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 8 Vol. 105; ISSN 1079-7114; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
ELECTRICAL PROPERTIES
INTERFACES
IRON OXIDES
LANTHANUM OXIDES
LATTICE PARAMETERS
MANGANESE OXIDES
PHASE TRANSFORMATIONS
STRONTIUM OXIDES
SUPERLATTICES