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On the temperature induced transformation between the two Al(111)-(√3 × √3)R30°-Rb structures

Lundgren, E. LU ; Nyholm, R. LU ; Burchhardt, J.; Heskett, D. and Andersen, J. N. LU (1995) In Surface Science 343(1-2). p.37-43
Abstract

The dynamics of the temperature induced transformation between low and high temperature adsorption phases of Rb on Al(111) has been followed by high resolution core level spectroscopy. Particular emphasis has been paid to the order-preserving transformation between the low and high temperature Al(111)-Rb-(√3 × √3)R30° structures in which Rb atoms occupy on-top and substitutional sites, respectively. For a Rb coverage of 0.33 monolayer the rate of conversion from on-top ti substitutional sites is found to increase strongly at 250 K. For Rb coverages below 0.33 but above approximately 0.14 monolayers the conversion occurs at lower temperatures. Increasing the coverage above 0.33 monolayers increases the conversion temperature. The... (More)

The dynamics of the temperature induced transformation between low and high temperature adsorption phases of Rb on Al(111) has been followed by high resolution core level spectroscopy. Particular emphasis has been paid to the order-preserving transformation between the low and high temperature Al(111)-Rb-(√3 × √3)R30° structures in which Rb atoms occupy on-top and substitutional sites, respectively. For a Rb coverage of 0.33 monolayer the rate of conversion from on-top ti substitutional sites is found to increase strongly at 250 K. For Rb coverages below 0.33 but above approximately 0.14 monolayers the conversion occurs at lower temperatures. Increasing the coverage above 0.33 monolayers increases the conversion temperature. The possibility to detect the Al atoms which are expelled from the first Al layer during the conversion is demonstrated. © 1995.

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author
organization
publishing date
type
Contribution to journal
publication status
published
keywords
Alkali metals, Aluminum, Photoelectron emission, Single crystal surfaces, Soft X-ray photoelectron spectroscopy, Surface relaxation and reconstruction, Surface thermodynamics
in
Surface Science
volume
343
issue
1-2
pages
7 pages
publisher
Elsevier
external identifiers
  • Scopus:0029537739
ISSN
0039-6028
DOI
10.1016/0039-6028(95)00751-2
language
English
LU publication?
yes
id
5acc7d20-83cc-48a3-b099-b8b80fc73694
date added to LUP
2016-04-29 11:05:18
date last changed
2016-05-21 11:57:50
@misc{5acc7d20-83cc-48a3-b099-b8b80fc73694,
  abstract     = {<p>The dynamics of the temperature induced transformation between low and high temperature adsorption phases of Rb on Al(111) has been followed by high resolution core level spectroscopy. Particular emphasis has been paid to the order-preserving transformation between the low and high temperature Al(111)-Rb-(√3 × √3)R30° structures in which Rb atoms occupy on-top and substitutional sites, respectively. For a Rb coverage of 0.33 monolayer the rate of conversion from on-top ti substitutional sites is found to increase strongly at 250 K. For Rb coverages below 0.33 but above approximately 0.14 monolayers the conversion occurs at lower temperatures. Increasing the coverage above 0.33 monolayers increases the conversion temperature. The possibility to detect the Al atoms which are expelled from the first Al layer during the conversion is demonstrated. © 1995.</p>},
  author       = {Lundgren, E. and Nyholm, R. and Burchhardt, J. and Heskett, D. and Andersen, J. N.},
  issn         = {0039-6028},
  keyword      = {Alkali metals,Aluminum,Photoelectron emission,Single crystal surfaces,Soft X-ray photoelectron spectroscopy,Surface relaxation and reconstruction,Surface thermodynamics},
  language     = {eng},
  month        = {12},
  number       = {1-2},
  pages        = {37--43},
  publisher    = {ARRAY(0x9810c08)},
  series       = {Surface Science},
  title        = {On the temperature induced transformation between the two Al(111)-(√3 × √3)R30°-Rb structures},
  url          = {http://dx.doi.org/10.1016/0039-6028(95)00751-2},
  volume       = {343},
  year         = {1995},
}