期刊
JOURNAL OF APPLIED PHYSICS
卷 109, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3590146
关键词
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资金
- DOD-ARO [0402-17291]
- NSF [DMR-0747808]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [747808] Funding Source: National Science Foundation
We report on the unusual nanoscale kinetics of the layer-by-layer deposition of complex oxide heterostructures composed of a unit-cell thick correlated metal LaNiO(3) and dielectric LaAlO(3). The ultrathin multilayers demonstrate extremely good crystallinity and surface morphology maintained over the large number of layers, as confirmed by combination of AFM, RHEED, and synchrotron x-ray diffraction. To elucidate the physics behind the growth, the temperature of the substrate and the deposition rate are varied over a wide range and the results are treated in the framework of a two-layer model. The results demonstrate that, in addition to temperature and vapor supersaturation, modulated flux can be employed as a powerful kinetic handle for the fine-tuned manipulation of sub-monolayer growth regimes of multicomponent materials. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3590146]
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