Reconstruction-stabilized epitaxy of LaCoO3/SrTiO3 (111) heterostructures by pulsed laser deposition
Abstract
Unlike widely explored complex oxide heterostructures grown along [001], the study of [111]-oriented heterointerfaces is very limited thus far. One of the main challenges is to overcome the polar discontinuity that hinders the epitaxy of atomically sharp interfaces. Here, by taking LaCoO3/SrTiO3(111) as a prototype, we show that the reconstruction, which effectively compensates the surface polarity, can stabilize the epitaxy of the heterostructure with polar discontinuity. A reconstructed substrate surface is prepared, while the growth is controlled to form reconstruction on the film surface. To suppress the chemical diffusion across the interface, the growth is interrupted between each unit cell layer to allow the lattice relaxation at a lowered temperature. In this way, high quality two-dimensional growth is realized and the heterointerfaces exhibit sharpness at the atomic scale. As a result, our work provides a path to precisely control the growth of complex oxide heterostructures along polar orientations that exhibit emergent quantum phenomena.
- Authors:
-
- Chinese Academy of Sciences (CAS), Beijing (China)
- Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
- Rutgers Univ., Piscataway, NJ (United States)
- Publication Date:
- Research Org.:
- Pennsylvania State Univ., University Park, PA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1503638
- Alternate Identifier(s):
- OSTI ID: 1417520
- Grant/Contract Number:
- SC0012375
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 112; Journal Issue: 3; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Hu, Minhui, Zhang, Qinghua, Gu, Lin, Guo, Qinlin, Cao, Yanwei, Kareev, M., Chakhalian, J., and Guo, Jiandong. Reconstruction-stabilized epitaxy of LaCoO3/SrTiO3 (111) heterostructures by pulsed laser deposition. United States: N. p., 2018.
Web. doi:10.1063/1.5006298.
Hu, Minhui, Zhang, Qinghua, Gu, Lin, Guo, Qinlin, Cao, Yanwei, Kareev, M., Chakhalian, J., & Guo, Jiandong. Reconstruction-stabilized epitaxy of LaCoO3/SrTiO3 (111) heterostructures by pulsed laser deposition. United States. https://doi.org/10.1063/1.5006298
Hu, Minhui, Zhang, Qinghua, Gu, Lin, Guo, Qinlin, Cao, Yanwei, Kareev, M., Chakhalian, J., and Guo, Jiandong. Fri .
"Reconstruction-stabilized epitaxy of LaCoO3/SrTiO3 (111) heterostructures by pulsed laser deposition". United States. https://doi.org/10.1063/1.5006298. https://www.osti.gov/servlets/purl/1503638.
@article{osti_1503638,
title = {Reconstruction-stabilized epitaxy of LaCoO3/SrTiO3 (111) heterostructures by pulsed laser deposition},
author = {Hu, Minhui and Zhang, Qinghua and Gu, Lin and Guo, Qinlin and Cao, Yanwei and Kareev, M. and Chakhalian, J. and Guo, Jiandong},
abstractNote = {Unlike widely explored complex oxide heterostructures grown along [001], the study of [111]-oriented heterointerfaces is very limited thus far. One of the main challenges is to overcome the polar discontinuity that hinders the epitaxy of atomically sharp interfaces. Here, by taking LaCoO3/SrTiO3(111) as a prototype, we show that the reconstruction, which effectively compensates the surface polarity, can stabilize the epitaxy of the heterostructure with polar discontinuity. A reconstructed substrate surface is prepared, while the growth is controlled to form reconstruction on the film surface. To suppress the chemical diffusion across the interface, the growth is interrupted between each unit cell layer to allow the lattice relaxation at a lowered temperature. In this way, high quality two-dimensional growth is realized and the heterointerfaces exhibit sharpness at the atomic scale. As a result, our work provides a path to precisely control the growth of complex oxide heterostructures along polar orientations that exhibit emergent quantum phenomena.},
doi = {10.1063/1.5006298},
journal = {Applied Physics Letters},
number = 3,
volume = 112,
place = {United States},
year = {Fri Jan 19 00:00:00 EST 2018},
month = {Fri Jan 19 00:00:00 EST 2018}
}
Web of Science
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