Nitrogen-induced nanometre-scale faceting of Cu(410)

Driver, S.M.; Woodruff, D.P.

doi:10.1016/j.susc.2004.04.054

Cited by 8 publications

(3 citation statements)

References 27 publications

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“…For example on vicinal Si(111) the 7 × 7 reconstruction selectively lowers σ of the (111) plane and therefore induces faceting [23,25,26]. Several investigations of small adsorbates on metal surfaces found step bunching; prominent examples are oxygen or nitrogen on Ag [27] and on Cu [28][29][30][31][32][33][34]. However, there are rather few examples of larger adsorbates known to cause faceting [35,36].…”

Section: Introductionmentioning

confidence: 99%

Long-range surface faceting induced by chemisorption of PTCDA on stepped Ag(111) surfaces

2016

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Section: Introductionmentioning

confidence: 99%

Long-range surface faceting induced by chemisorption of PTCDA on stepped Ag(111) surfaces

2016

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“…Under ambient temperatures and pressures, molecular nitrogen does not interact with Cu surfaces, due to the strong nitrogen-nitrogen bond, so the adsorption of nitrogen on Cu ͑100͒, Cu ͑110͒, and Cu ͑111͒ surfaces has been achieved typically by nitrogen-ion bombardment. [10][11][12] These experimental investigations have resulted in a number of observed adsorption phases, from simple chemisorption to complex surface nitride structures, which have a thickness on the nanometer or subnanometer scale. 13 For the N/Cu ͑100͒ system, both experimental 6-9,12,14-16 and density-functional theory 17,18 ͑DFT͒ studies have confirmed that N chemisorbs on Cu ͑100͒ in the fourfold hollow ͑4FH͒ sites, forming a Cu ͑100͒-p͑2 ϫ 2͒-2N structure, otherwise ͑and hereafter͒ known as the Cu ͑100͒-c͑2 ϫ 2͒-N phase, with 0.5 monolayer ͑ML͒ coverage at saturation ͓see Fig.…”

Section: Introductionmentioning

confidence: 99%

Morphology of copper nanoparticles in a nitrogen atmosphere: A first-principles investigation

et al. 2008

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We perform first-principles density-functional-theory calculations to determine the stability and associated physical and electronic properties of different adsorption phases of N on Cu ͑100͒ and Cu ͑110͒ substrates for coverages ranging from 0.125 to 1 monolayer ͑ML͒. For N on Cu ͑100͒, we consider adsorption in fourfold hollow sites while for N on Cu ͑110͒, we consider various adsorption sites including N-induced missing-row surface reconstructions and the surface nitridelike, "pseudo-͑100͒" reconstruction. We report the atomic and electronic structure and compare with analogous results for N/Cu ͑111͒. By combining results from our previous study of the N/Cu ͑111͒ system with the current investigations, we predict the possible morphology of a Cu crystal in different nitrogen environments by performing a Wulff construction at appropriate chemical potentials of nitrogen. We also find that all low-energy N/Cu surface structures-namely, Cu ͑100͒-c͑2 ϫ 2͒-N and the surface nitrides found on Cu ͑110͒ and Cu ͑111͒-share a common geometric feature: i.e., surface nanopatterns resembling 1 atomic layer of Cu 3 N ͑100͒. These nanopatterned structures exist for a narrow range of nitrogen chemical potentials before the onset of bulk Cu 3 N, unless kinetically hindered. This qualitative behavior of the predicted formation of thin-surface nitridelike structures prior to the bulk nitride material is very similar to that for transition-metal surfaces in an oxygen atmosphere, where surface oxidelike structures are predicted to be thermodynamically stable prior to bulk oxide formation.

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“…Extensive studies have been carried out on faceting of metal single-crystal surfaces induced by adsorption of nonmetallic species, e.g., (O and Cl) on W(111) [28,56,57], (O, S, N and CO) on Mo (111) [58][59][60], (N and S) on Fe(111) [61][62][63], (O and N) on Cu(11n) (n = 5 and 9) [64,65], N on Cu(410) [66], O/Ir (210) [17,67], O on Rh (210) and Rh(553) [68][69][70], (O and C) on Rh(755) [71], (O and N) on Ni (210) [72,73], N on Cu(210) [73], C on stepped Ni [74], O/Pt (210) [79,80]. Among these studies, oxygen-induced faceting of metal surfaces with face-centered cubic (fcc) and body-centered cubic (bcc) structures have been investigated the most.…”

Section: Overview Of Facetingmentioning

confidence: 99%