Evidence for quantum size effects observed by helium atom scattering during the growth of Pb on Cu(111)

B. J. Hinch; C. Koziol; J. P. Toennies; G. Zhang

doi:10.1209/0295-5075/10/4/010

Evidence for quantum size effects observed by helium atom scattering during the growth of Pb on Cu(111)

B. J. Hinch, C. Koziol, J. P. Toennies, G. Zhang

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Abstract

The specular intensity of nearly mono-energetic helium atom beams (E_i = (7 ÷ 20) meV) has been measured during epitaxial deposition of Pb films on Pb(111) and Cu(111) surfaces. For Pb on Pb(111) regular monotonically damped oscillations are observed indicating monolayer by monolayer growth. For Pb on Cu(111) a more complicated modulated structure was found indicating an alternation between single- and double-layer growth mechanisms where in the double-layer regions the reflectivity was largest. The thickness at which double-layer growth predominates is found to coincide with predictions involving the dimensions of potential wells and electronic states normal to the surface. The lack of complex structures for Pb on Pb(111) system confirms the requirement of an internal boundary and appears to rule out other possible explanations.

Original language	English (US)
Pages (from-to)	341-346
Number of pages	6
Journal	EPL
Volume	10
Issue number	4
DOIs	https://doi.org/10.1209/0295-5075/10/4/010
State	Published - Oct 15 1989
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1209/0295-5075/10/4/010

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title = "Evidence for quantum size effects observed by helium atom scattering during the growth of Pb on Cu(111)",

abstract = "The specular intensity of nearly mono-energetic helium atom beams (Ei = (7 ÷ 20) meV) has been measured during epitaxial deposition of Pb films on Pb(111) and Cu(111) surfaces. For Pb on Pb(111) regular monotonically damped oscillations are observed indicating monolayer by monolayer growth. For Pb on Cu(111) a more complicated modulated structure was found indicating an alternation between single- and double-layer growth mechanisms where in the double-layer regions the reflectivity was largest. The thickness at which double-layer growth predominates is found to coincide with predictions involving the dimensions of potential wells and electronic states normal to the surface. The lack of complex structures for Pb on Pb(111) system confirms the requirement of an internal boundary and appears to rule out other possible explanations.",

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T1 - Evidence for quantum size effects observed by helium atom scattering during the growth of Pb on Cu(111)

AU - Hinch, B. J.

AU - Koziol, C.

AU - Toennies, J. P.

AU - Zhang, G.

PY - 1989/10/15

Y1 - 1989/10/15

N2 - The specular intensity of nearly mono-energetic helium atom beams (Ei = (7 ÷ 20) meV) has been measured during epitaxial deposition of Pb films on Pb(111) and Cu(111) surfaces. For Pb on Pb(111) regular monotonically damped oscillations are observed indicating monolayer by monolayer growth. For Pb on Cu(111) a more complicated modulated structure was found indicating an alternation between single- and double-layer growth mechanisms where in the double-layer regions the reflectivity was largest. The thickness at which double-layer growth predominates is found to coincide with predictions involving the dimensions of potential wells and electronic states normal to the surface. The lack of complex structures for Pb on Pb(111) system confirms the requirement of an internal boundary and appears to rule out other possible explanations.

AB - The specular intensity of nearly mono-energetic helium atom beams (Ei = (7 ÷ 20) meV) has been measured during epitaxial deposition of Pb films on Pb(111) and Cu(111) surfaces. For Pb on Pb(111) regular monotonically damped oscillations are observed indicating monolayer by monolayer growth. For Pb on Cu(111) a more complicated modulated structure was found indicating an alternation between single- and double-layer growth mechanisms where in the double-layer regions the reflectivity was largest. The thickness at which double-layer growth predominates is found to coincide with predictions involving the dimensions of potential wells and electronic states normal to the surface. The lack of complex structures for Pb on Pb(111) system confirms the requirement of an internal boundary and appears to rule out other possible explanations.

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Evidence for quantum size effects observed by helium atom scattering during the growth of Pb on Cu(111)

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