期刊
APPLIED PHYSICS LETTERS
卷 95, 期 14, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3240869
关键词
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资金
- Spanish Government [MAT2008-06761-C03, MAT2007-66719C03, MAT2007-62732, CSD2007-00041]
- EU [MaCoMuFi FP6-03321]
We show that atomically flat single SrO-terminated SrTiO3(001) substrates can be obtained through simple high-temperature treatment. Amplitude-modulation atomic force microscopy with phase-lag analysis and x-ray photoelectron spectroscopy, have been used to demonstrate that the ratio between the two chemical terminations can be tailored by choosing the annealing time. Moreover, the progressive SrO surface enrichment (up to 100%) is accompanied by a self-assembly process which results in the spatial separation at the nanoscale of both chemical terminations. We further demonstrate that this opens a interesting avenue for selective chemical reaction and growth of oxide nanostructures. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3240869]
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