期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 8, 期 24, 页码 6035-6040出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.7b02947
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资金
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-SC0001135]
- National Science Foundation [CBET-1264940, NSF-DMR-1410055, TG-DMR110009, TG-DMR160124, TG-DMR130041, ACI-1548562]
- Center for Functional Nanomaterials, which is a U.S. DOE Office of Science Facility, at Brookhaven National Laboratory [DE-SC0012704]
- [DE-AC02-06CH11357]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1264940] Funding Source: National Science Foundation
Using in situ transmission electron microscopy that spatially and temporally resolves the evolution of the atomic structure in the surface and subsurface regions, we find that the surface segregation of Au atoms in a Cu(Au) solid solution results in the nucleation and growth of a (2 X 1) missing-row reconstructed, half-unit-cell thick L1(2) Cu3Au(110) surface alloy. Our in situ electron microscopy observations and atomistic simulations demonstrate that the (2 x 1) reconstruction of the Cu3Au(110) surface alloy remains as a stable surface structure as a result of the favored Cu-Au diatom configuration.
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