One-dimensional Ag-Cu superlattices on vicinal Cu(111)

Autor(en): Bachmann, AR
Mugarza, A
Ortega, JE
Speller, S
Stichwörter: AG/CU(111); CU(100); GROWTH; Materials Science; Materials Science, Multidisciplinary; Physics; Physics, Applied; Physics, Condensed Matter; SCANNING-TUNNELING-MICROSCOPY; SURFACE
Erscheinungsdatum: 2001
Herausgeber: AMER PHYSICAL SOC
Journal: PHYSICAL REVIEW B
Volumen: 64
Ausgabe: 15
Zusammenfassung: 
Regular arrays of one-dimensional Ag stripes can be grown by adsorption and annealing of Ag on vicinal Cu(III). The Ag adlayer induces a periodic hill-and-valley nanostructure with alternating A,-covered (112)oriented facets and clean Cu stepped areas. The superlattice has been studied as a function of Ag coverage using a wedge (0.34-0.52 monolayers). The width of the Ag stripes is constant across the wedge (approximate to 45 Angstrom), such that the wavelength of the hill-and-valley structure varies from 140 Angstrom to 90 Angstrom and the width and step density of the Cu stepped areas is reduced accordingly. The structure of the Ag-covered stripes is consistent with a rotated, uniaxially compressed, close-packed layer that wets the Cu(112) plane.
ISSN: 10980121
DOI: 10.1103/PhysRevB.64.153409

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