Atomistic versus collective phenomena in catalysis: Carbidic and graphitic carbon on Ni(771)

Koch, R.; Haase, Oliver; Borbonus, M.; Rieder, K. H.

doi:10.1103/physrevb.45.1525

Cited by 17 publications

(5 citation statements)

References 27 publications

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“…The left-hand branches of and states are shifted relative to the macrosurface normal [771] by ÿ6 . This value (which has been determined in situ from the parallel dispersion with the help of the azimuthal rotation) is identical to the miscut angle between the Ni(771) macro-surface and the Ni(110) terraces [10] and allows us to ascribe the left-hand branches to (110)-microsurfacecentered states. Moreover, (ii) the right-hand band structure shows pronounced gaps for the , 2 , and 1 states, which have no counterpart in the parallel dispersion data [Figs.…”

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confidence: 77%

“…After additional annealing at 450-500 C in ultrahigh vacuum the system consists of graphene stripes along the Ni terraces with finite width in the perpendicular direction due to the limited size of the terraces. As shown by scanning tunneling microscopy [10], the Ni(771) surface is characterized by monoatomic steps with a height of 1:24 A and Ni(110)-oriented terraces with a width of 12:3…”

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confidence: 99%

“…The assumption of a second phase due to artifacts such as sputtering defects or faceting is at variance with the STM characterization [10]. It should be kept in mind that, in view of the comparable photoemission intensity of the two branches, any such artifact would have to involve a large portion of the sample surface which does not reconcile with the characterization of the macrosurface as (771) [14].…”

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confidence: 99%

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Electronic Structure of Carbon Nanostripes

et al. 2003

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Carbon nanostripes of graphene structure prepared on the stepped Ni(771) surface have been studied by angle-resolved photoemission. The electronic structure is anisotropic: parallel to the stripe direction, a graphite-type dispersion is measured, whereas the perpendicular direction displays two entangled band structures shifted in energy with respect to each other. These are experimentally identified as the microsurface-centered band structure and its umklapp scattered image caused by the superlattice.

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confidence: 77%

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Electronic Structure of Carbon Nanostripes

et al. 2003

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“…High index surfaces can be considered as periodic arrays of atomic steps therefore are natural "superlattice substrates" for quasi-1D periodic modulations. In fact, quasi-1D stripes of monolayer graphite have been successfully synthesized on Ni(771) [24,25]. The stripes on the terraces have a well-defined width thus exhibiting size limited effects.…”

Section: Introductionmentioning

confidence: 99%

Quasi-one-dimensional graphene superlattices formed on high-index surfaces

Lin

Huang

et al. 2014

Phys. Rev. B

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We report preparation of large area quasi-1D monolayer graphene superlattices on a prototypical high index surface Cu(410)-O and characterization by Raman spectroscopy, Auger electron spectroscopy (AES), low energy electron diffraction (LEED), scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS). The periodically stepped substrate gives a 1D modulation to graphene, forming a superlattice of the same super-periodicity. Consequently the moiré pattern is also quasi-1D, with a different periodicity. Scanning tunneling spectroscopy measurements revealed new Dirac points formed at the superlattice Brillouin zone boundary as predicted by theories. † These authors contributed equally to this work. * zhhu@pku.edu.cn 1

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“…13 They are also of a great importance in the process of nickel graphitization because they initiate growth of the grapheme. 13,14 At the same time, in most of the experimental studies of graphene it was synthesized on flat surfaces only. In the particular case of a nickel substrate, graphene was studied in considerable detail on the ͑111͒ plane where it forms a commensurate overlayer with ͑1 ϫ 1͒ structure.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical study of the morphology of commensurate and incommensurate graphene layers on Ni single-crystal surfaces

et al. 2008

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The paper reports on a scanning tunneling microscopy ͑STM͒ study and computer simulation with an N-body interatomic interaction potential of a graphite monolayer ͑i.e., graphene͒ on the Ni͑111͒, ͑110͒, ͑755͒, and ͑771͒ single-crystal surfaces. Unlike the case of graphene on Ni͑111͒, which forms a solid single-crystal coating with ͑1 ϫ 1͒ structure, graphene on the Ni͑110͒ surface forms a complex crystal structure distorted substantially by interaction with the substrate. Calculations of the graphene/Ni͑110͒ system have revealed that the strong chemical interaction of carbon with nickel gives rise to a noticeable curving of the graphene layer on a scale of a few angstroms. The model thus derived has permitted proper interpretation of the experimental data obtained by STM, as well as prediction of the main result of studies of graphene formed on faceted surfaces, which have revealed the ability of graphene to coat geometrically nonuniform surfaces in the form of a curved continuous film.

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Atomistic versus collective phenomena in catalysis: Carbidic and graphitic carbon on Ni(771)

Cited by 17 publications

References 27 publications

Electronic Structure of Carbon Nanostripes

Electronic Structure of Carbon Nanostripes

Quasi-one-dimensional graphene superlattices formed on high-index surfaces

Experimental and theoretical study of the morphology of commensurate and incommensurate graphene layers on Ni single-crystal surfaces

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