Selective silver atom interaction at beta-SiC(100) surfaces: From anisotropic diffusion to metal atomic wires and stripes - Couches nanométriques : formation, interfaces, défauts Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2007

Selective silver atom interaction at beta-SiC(100) surfaces: From anisotropic diffusion to metal atomic wires and stripes

Résumé

Silver (Ag) atom interaction on beta-SiC(100) surface reconstructions is investigated by atom-resolved scanning tunneling microscopy. On the 3x2 (Si-rich) reconstruction, the adsorbate-adsorbate interaction is dominant with no surface wetting, leading to Ag cluster formation. In contrast, on the c(4x2) Si-terminated reconstruction, almost equivalent Ag-Ag and Ag-surface interactions allow selective one dimensional nano-object formation including Ag atomic wires and stripes following the substrate registry. Their orientation is mediated by anisotropic Ag atom diffusion occurring along Si-dimer rows at 25 degrees C and perpendicularly to them at elevated temperatures, suggesting dimer flipping as diffusion barrier. These metal nanowires potentially open up cross-wiring capability in massively parallel Si atomic lines network.
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Dates et versions

hal-01290174 , version 1 (17-03-2016)

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Marie d'Angelo, V. Yu. Aristov, P. Soukiassian. Selective silver atom interaction at beta-SiC(100) surfaces: From anisotropic diffusion to metal atomic wires and stripes. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2007, 76 (4), pp.045304. ⟨10.1103/PhysRevB.76.045304⟩. ⟨hal-01290174⟩
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