Quasi unidimensional growth of Co nanostructures on a strained Au(111) surface

• Published in: Surface science Vol. 605; no. 13-14; pp. 1165 - 1169
• Main Authors: Campiglio, P., Repain, V., Chacon, C., Fruchart, O., Lagoute, J., Girard, Y., Rousset, S.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 01.07.2011; Elsevier
• Subjects: Cobalt; Condensed Matter; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Deposition; Diffusion; Elongation; Exact sciences and technology; Low index single crystal surfaces; Materials Science; Metal-metal magnetic thin films structures; Nanocomposites; Nanomaterials; Nanostructure; Nucleation; Physics; Platinum; Scanning tunneling microscopy; Self-assembly; Surface diffusion; Metal-metal magnetic thin films structures; Scanning tunneling microscopy; Self-assembly; Surface diffusion; Low index single crystal surfaces; Cobalt; Nucleation; Step; Nanostructures; Magnetic thin films; Monocrystals; Strains; Platinum; Transition elements; Diffusion; Metal-metal magnetic thin lm structures; Surface diusion
• ISSN: 0039-6028; 1879-2758
• DOI: 10.1016/j.susc.2011.03.019

We investigated to which extent a uniaxially-strained Au(111) surface, thereby displaying linear reconstructions, may be used as a template for the growth of elongated nanostructures. Cobalt has been used as a deposition material and two routes have been followed satisfactorily. The first one consists of the control of diffusion through the temperature of deposition. The second one consists of a first step of platinum seeding in the reconstruction, followed by cobalt deposition with nucleation on the platinum seeds. ► Uniaxially-strained Au(111) surface as template for undimensional nanostructures. ► Co elongated dots obtained by controlling diffusion of adatoms with temperature. ► Pt seed layer triggers Co nucleation that then coalesce forming elongated dots. ► Co dots are elongated along the same direction on a macroscopic scale.