Interfacial B-site atomic configuration in polar (111) and non-polar (001) SrIrO3/SrTiO3 heterostructures
The precise control of interfacial atomic arrangement in ABO3 perovskite heterostructures is paramount, particularly in cases where the subsequent electronic properties of the material exhibit geometrical preferences along polar crystallographic directions that feature...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2017-09-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/1.4993170 |
| _version_ | 1819160566120316928 |
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| author | T. J. Anderson H. Zhou L. Xie J. P. Podkaminer J. J. Patzner S. Ryu X. Q. Pan C. B. Eom |
| author_facet | T. J. Anderson H. Zhou L. Xie J. P. Podkaminer J. J. Patzner S. Ryu X. Q. Pan C. B. Eom |
| author_sort | T. J. Anderson |
| collection | DOAJ |
| description | The precise control of interfacial atomic arrangement in ABO3 perovskite
heterostructures is paramount, particularly in cases where the subsequent electronic
properties of the material exhibit geometrical preferences along polar crystallographic
directions that feature inevitably complex surface reconstructions. Here, we present the
B-site interfacial structure in polar (111) and non-polar (001)
SrIrO3/SrTiO3 interfaces. The heterostructures were examined using
scanning transmission electron microscopy and synchrotron-based coherent Bragg rod
analysis. Our results reveal the preference of B-site intermixing across the (111)
interface due to the polarity-compensated SrTiO3 substrate surface prior to
growth. By comparison, the intermixing at the non-polar (001) interface is negligible.
This finding suggests that the intermixing may be necessary to mitigate epitaxy along
heavily reconstructed and non-stoichiometric (111) perovskite surfaces. Furthermore, this
preferential B-site configuration could allow the geometric design of the interfacial
perovskite structure and chemistry to selectively engineer the correlated electronic
states of the B-site d-orbital. |
| first_indexed | 2024-12-22T16:58:29Z |
| format | Article |
| id | doaj.art-1be3aeaf39c14bb1a912fcee7c8004ad |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-12-22T16:58:29Z |
| publishDate | 2017-09-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-1be3aeaf39c14bb1a912fcee7c8004ad2022-12-21T18:19:23ZengAIP Publishing LLCAPL Materials2166-532X2017-09-0159096110096110-710.1063/1.4993170014709APMInterfacial B-site atomic configuration in polar (111) and non-polar (001) SrIrO3/SrTiO3 heterostructuresT. J. Anderson0H. Zhou1L. Xie2J. P. Podkaminer3J. J. Patzner4S. Ryu5X. Q. Pan6C. B. Eom7Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USAAdvanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USADepartment of Chemical Engineering and Materials Science, University of California-Irvine, Irvine, California 92697, USADepartment of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USADepartment of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USADepartment of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USADepartment of Chemical Engineering and Materials Science, University of California-Irvine, Irvine, California 92697, USADepartment of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USAThe precise control of interfacial atomic arrangement in ABO3 perovskite heterostructures is paramount, particularly in cases where the subsequent electronic properties of the material exhibit geometrical preferences along polar crystallographic directions that feature inevitably complex surface reconstructions. Here, we present the B-site interfacial structure in polar (111) and non-polar (001) SrIrO3/SrTiO3 interfaces. The heterostructures were examined using scanning transmission electron microscopy and synchrotron-based coherent Bragg rod analysis. Our results reveal the preference of B-site intermixing across the (111) interface due to the polarity-compensated SrTiO3 substrate surface prior to growth. By comparison, the intermixing at the non-polar (001) interface is negligible. This finding suggests that the intermixing may be necessary to mitigate epitaxy along heavily reconstructed and non-stoichiometric (111) perovskite surfaces. Furthermore, this preferential B-site configuration could allow the geometric design of the interfacial perovskite structure and chemistry to selectively engineer the correlated electronic states of the B-site d-orbital.http://dx.doi.org/10.1063/1.4993170 |
| spellingShingle | T. J. Anderson H. Zhou L. Xie J. P. Podkaminer J. J. Patzner S. Ryu X. Q. Pan C. B. Eom Interfacial B-site atomic configuration in polar (111) and non-polar (001) SrIrO3/SrTiO3 heterostructures APL Materials |
| title | Interfacial B-site atomic configuration in polar (111) and non-polar (001)
SrIrO3/SrTiO3 heterostructures |
| title_full | Interfacial B-site atomic configuration in polar (111) and non-polar (001)
SrIrO3/SrTiO3 heterostructures |
| title_fullStr | Interfacial B-site atomic configuration in polar (111) and non-polar (001)
SrIrO3/SrTiO3 heterostructures |
| title_full_unstemmed | Interfacial B-site atomic configuration in polar (111) and non-polar (001)
SrIrO3/SrTiO3 heterostructures |
| title_short | Interfacial B-site atomic configuration in polar (111) and non-polar (001)
SrIrO3/SrTiO3 heterostructures |
| title_sort | interfacial b site atomic configuration in polar 111 and non polar 001 sriro3 srtio3 heterostructures |
| url | http://dx.doi.org/10.1063/1.4993170 |
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