Reconstruction kinetics of a stepped metallic surface: step doubling and singling of Ni(977) induced by low oxygen coverages

Niu, L.; Koleske, Daniel; Gaspar, Daniel J.; King, Sharese; Sibener, S. J.

doi:10.1016/0039-6028(96)00032-5

Cited by 23 publications

(31 citation statements)

References 33 publications

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“…For HMI surfaces with closed-packed terraces (i.e. fcc (111) oriented), oxygen adsorption was demonstrated to cause a transition from monoatomic to double steps on various metals (Cu, Pt, Rh, Ni) [63,[279][280][281][282]. On the contrary, for more open stepped surfaces, showing e.g.…”

Section: Oxygen Adsorption At Cu: Adsorbate-induced Reconstruction Anmentioning

confidence: 96%

Bridging the structure gap: Chemistry of nanostructured surfaces at well-defined defects

Vattuone

Savio

Rocca

2008

Surface Science Reports

121

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Section: Oxygen Adsorption At Cu: Adsorbate-induced Reconstruction Anmentioning

confidence: 96%

Bridging the structure gap: Chemistry of nanostructured surfaces at well-defined defects

Vattuone

Savio

Rocca

2008

Surface Science Reports

121

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“…16 In fcc surfaces vicinal to the (111) direction step-doubling is frequently linked to the presence of adsorbates or impurities that prefer to attach to microfacets with distinct orientation. [17][18][19][20][21][22][23][24] In the case of vicinal Ni(111), step-doubling is triggered by minute amounts of adsorbates, such as O 2 , 22,23 or by temperature-reversible migration of bulk C impurities. 20 More recently, spontaneous step doubling has been claimed in the clean Ni(775) surface at ∼600 K, 24 although such observation has been later contested.…”

Section: Introductionmentioning

confidence: 99%

Step-doubling at Vicinal Ni(111) Surfaces Investigated with a Curved Crystal

et al. 2017

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Vicinal surfaces may undergo structural transformations as a function of temperature or in the presence of adsorbates. Step-doubling, in which monatomic steps pair up forming double-atom high staircases, is the simplest example. Here we investigate the case of Ni(111) using a curved crystal surface, which allows us to explore the occurrence of step-doubling as a function of temperature and vicinal plane (miscut α and step type). We find a striking A-type ({100}-like microfacets) versus B-type ({111}-like) asymmetry towards step-doubling. The terrace-width distribution analysis performed from Scanning Tunneling Microscopy data points to elastic step interactions overcoming entropic effects at very small miscut α in A-type vicinals, as compared to B-type steps. For A-type vicinals, we elaborate the temperature/miscut phase diagram, on which we establish a critical miscut α c = 9.3 • for step-doubling to take place.

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“…Especially, for regular stepped metal surfaces with close packed ͓e.g., fcc͑111͒ oriented͔ terraces an oxygen-induced transition from monatomic to double-height steps has been obtained for various metals ͑Cu,Pt,Rh,Ni͒. [6][7][8][9][10] On the other hand, for the more open stepped surfaces ͓e.g., ͑100͒ or ͑110͒ oriented terraces͔ an oxygen-induced facetting appears. [11][12][13][14] These phenomena are attributed to the small difference in the surface free energy between the low indexed surface and the vicinal surface, compared to the relatively large binding energy of the oxygen ͑i.e., Ͼ4 eV͒, which adsorbs predominantly at the steps.…”

Section: Introductionmentioning

confidence: 99%

Oxygen-induced reconstructions on Cu(211)

Witte

Braun²,

Nowack³

et al. 1998

Phys. Rev. B

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The chemisorption of oxygen on the vicinal Cu͑211͒ surface and the subsequent reconstructions have been studied by means of He-atom scattering, spot profile analysis-low-energy electron diffraction, scanning tunneling microscopy, and Auger-electron spectroscopy. At temperatures below 250 K oxygen adsorbs without any pronounced ordering whereas at elevated temperatures above 300 K the surface starts to reconstruct and the formation of double steps occurs. Several ordered superstructures have been identified that depend on the thermal activation. The double steps are thermally stable up to 800 K. Experiments for very low oxygen coverages indicate that the reconstruction starts initially at the step edges and involves later subsurface oxide formation. Preliminary measurements for a regularly kinked surface reveal a similar oxygen-induced reconstruction. ͓S0163-1829͑98͒10439-3͔

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Reconstruction kinetics of a stepped metallic surface: step doubling and singling of Ni(977) induced by low oxygen coverages

Cited by 23 publications

References 33 publications

Bridging the structure gap: Chemistry of nanostructured surfaces at well-defined defects

Bridging the structure gap: Chemistry of nanostructured surfaces at well-defined defects

Step-doubling at Vicinal Ni(111) Surfaces Investigated with a Curved Crystal

Oxygen-induced reconstructions on Cu(211)

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