Tailoring periodic nanostructures of vicinal copper surfaces: Formation and evolution of oxygen-induced faceting on Cu(332)

ViolBarbosa, Carlos E.; Fujii, Jun; Panaccione, G.; Rossi, G.

doi:10.1016/j.susc.2009.08.018

Cited by 6 publications

(2 citation statements)

References 31 publications

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“…The growth manner observed here could be applied to tailoring graphene to desirable shapes in the nanometer scale. For example, graphene nanoribbons might be formed in a self-organizing manner by using regular steps appearing on a vicinal surface of single crystal substrate [39,40] or epitaxial film [18,19]. While we demonstrated graphene growth at low pressure in this study, the growth at atmospheric pressure can probably avoid Cu evaporation, thus providing better control of graphene geometry on nanostructured surfaces.…”

Section: Resultsmentioning

confidence: 79%

Anisotropic graphene growth accompanied by step bunching on a dynamic copper surface

Hayashi¹,

Sato²,

Yokoyama³

2012

Nanotechnology

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We investigated the initial stage of chemical vapor deposition graphene growth on Cu film at low pressure, where Cu evaporation intensively occurs. Surface steps on the Cu surface were found to be the nucleation sites of graphene islands and to affect the subsequent growth. For the first time, we observed anisotropic graphene growth on the Cu surface accompanied by morphological changes, resulting in an arrayed graphene ribbon formation. The resultant surface morphology is attributed to step bunching during growth. Detailed analyses suggest that the graphene arrays, which were preferentially formed along the steps, served as partial shields of the Cu surface, preventing step-flow-like Cu atom diffusion and evaporation at the growth site. As a result, the growth locations acted as a pinning site of the step motion, leading to step bunching. Such selective growth by using surface morphology has the potential to control not only the nucleation site but also the geometry of graphene for tailoring graphene-based nanomaterials such as nanoribbons and quantum dots.

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Section: Resultsmentioning

confidence: 79%

Anisotropic graphene growth accompanied by step bunching on a dynamic copper surface

Hayashi¹,

Sato²,

Yokoyama³

2012

Nanotechnology

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“…The Cu(332) surface is vicinal to Cu(111), with a nominal miscut of 10°. Oxygen dosing induces on Cu(332) a striped pattern composed of alternating oxidized Cu(110) facets and atomic clean Cu(111) terraces of tunable width. − Iron nanowires were grown by depositing Fe 0.3 ML that self-assembles on the oxidized strips of the Cu(332) surface reproducing a pattern with an average periodicity of 4 nm . Hereafter we refer this system as Fe–O–Cu surface.…”

Section: Methodsmentioning

confidence: 99%

CoPc 2D and 1D Arrangement on a Ferromagnetic Surface

et al. 2016

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We investigated the growth and electronic properties of Co-phthalocyanine (CoPc) molecule deposited on iron film with different structures (pseudomorph-fcc and bcc) and on iron nanowires by scanning tunnelling microscopy and X-ray absorption spectroscopy (XAS). CoPc molecules self-assemble in a two-dimensional (2D) arrangement with the molecular plane parallel to the iron surfaces, and the local order is lost after the first layer. The molecule-ferromagnet interaction causes the broadening of Co and N unoccupied molecular states as well as different electronic distribution of N states as a function of the atomic structure of iron surface. The ferromagnetic coupling between the molecule and the iron film is dominated by the electronic interaction between Co and the first Fe layer. CoPc 2D arrangement turns into 1D by using as a template the iron nanowire grown on a facet surface of oxidized Cu(332) surface. CoPc molecules interact weakly with the iron nanowires manifesting a substantial Co 3dz spectral feature in XAS spectrum and the possibility of a magnetic interaction between Co moment and iron nanowires. Both CoPc 2D and 1D arrangements can open up new interesting scenarios to tune the magnetic properties of hybrid interfaces involving metallorganic molecules.

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Stability of vicinal surfaces and role of the surface stress

Hecquet

2010

Surface Science

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Tailoring periodic nanostructures of vicinal copper surfaces: Formation and evolution of oxygen-induced faceting on Cu(332)

Cited by 6 publications

References 31 publications

Anisotropic graphene growth accompanied by step bunching on a dynamic copper surface

Anisotropic graphene growth accompanied by step bunching on a dynamic copper surface

CoPc 2D and 1D Arrangement on a Ferromagnetic Surface

Stability of vicinal surfaces and role of the surface stress

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