1993
DOI: 10.1103/physrevb.48.5549
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Behavior of Ni atoms on the Cu(111) surface: A study by high-resolution electron-energy-loss spectroscopy

Abstract: The temperature-dependent behavior of vapor-deposited Ni atoms on the Cu(111) surface has been studied by HREELS. Submonolayer coverage of Ni atoms are vapor-deposited on this surface in ultrahigh vacuum in the temperature range of 140 -600 K. CO is used to monitor the structure of the Nicovered Cu(111) surface at various Ni-deposition temperatures. For submonolayer Ni deposition at

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Cited by 19 publications
(13 citation statements)
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“…Furthermore, we know that the Ni atoms not necessarily remain adsorbed on the surface but that with increasing surface temperature the Ni atoms start to move into surface and subsurface sites of the copper substrate. This has also been demonstrated by using other experimental techniques, such as HREELS ͑high-resolution electron-energy-loss spectroscopy͒, 32,33 and theoretically by the first-principles Greens's function technique. 34 The kinetics of subsurface penetration and finally the dissolution into the bulk, however, depends not only on the temperature but also on the amount of nickel and on the amount of CO ad- sorbed on the surface, as will be outlined in the discussion.…”
Section: Co On Bimetallic Ni/cu(110) Surfacesmentioning
confidence: 75%
“…Furthermore, we know that the Ni atoms not necessarily remain adsorbed on the surface but that with increasing surface temperature the Ni atoms start to move into surface and subsurface sites of the copper substrate. This has also been demonstrated by using other experimental techniques, such as HREELS ͑high-resolution electron-energy-loss spectroscopy͒, 32,33 and theoretically by the first-principles Greens's function technique. 34 The kinetics of subsurface penetration and finally the dissolution into the bulk, however, depends not only on the temperature but also on the amount of nickel and on the amount of CO ad- sorbed on the surface, as will be outlined in the discussion.…”
Section: Co On Bimetallic Ni/cu(110) Surfacesmentioning
confidence: 75%
“…74 and 75 that Ni segregates into the first subsurface layer of Cu(100) as well as Cu(111). 76 By theoretical calculations, Pourovskii et al 77 found a rather sharp minimum of the surface energy corresponding to the arrangement of a Ni layer in the second layer of Cu(100). Anyway, this surface composition is only present at low temperature.…”
Section: Discussionmentioning
confidence: 99%
“…The reconstruction mechanism has been described in more detail elsewhere [26,27]. Briefly, the Au(1 1 1) surface is uniaxially contracted (4.2%) along the close-packed [1][2][3][4][5][6][7][8][9][10] directions leading to fcc and hcp stacking regions that are separated by dislocation lines. In addition, a regular alternation of uniaxially contracted domains allows a more isotropic contraction of the surface layer.…”
Section: Introductionmentioning
confidence: 99%