Surface phase transition and electronic structure of c(5 root 2 x root 2)R45 degrees-Pb/Cu(100)
(2006) 23th European Conference on Surface Science 600(18). p.3851-3855- Abstract
- The c(5 root 2 x root 2)R45 degrees-Pb/Cu(100) surface phase is investigated by means of angle resolved ultraviolet photoemission and low energy electron diffraction in the temperature range between 300 and 550 K. We identify and characterize a temperature-induced surface phase transition at 440 K from the room temperature e(5 root 2 x root 2) R45 degrees phase to a (root 2 x root 2)R45 degrees structure with split superstructure spots. The phase transition is fully reversible and takes place before the two-dimensional melting of the structure at 520 K. The electronic structure of the split (root 2 x root 2)R45 degrees phase is characterized by a metallic free-electron like surface band. This surface band is backfolded with c(5 root 2 x... (More)
- The c(5 root 2 x root 2)R45 degrees-Pb/Cu(100) surface phase is investigated by means of angle resolved ultraviolet photoemission and low energy electron diffraction in the temperature range between 300 and 550 K. We identify and characterize a temperature-induced surface phase transition at 440 K from the room temperature e(5 root 2 x root 2) R45 degrees phase to a (root 2 x root 2)R45 degrees structure with split superstructure spots. The phase transition is fully reversible and takes place before the two-dimensional melting of the structure at 520 K. The electronic structure of the split (root 2 x root 2)R45 degrees phase is characterized by a metallic free-electron like surface band. This surface band is backfolded with c(5 root 2 x root 2)R45 degrees periodicity phase at room temperature, giving rise to a surface band gap at the Fermi energy. We propose that a gain in electronic energy explains in part the stability of the c(5 root 2 x root 2)R45 degrees phase. (c) 2006 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/384300
- author
- Joco, V. ; Martinez-Blanco, J ; Segovia, P. ; Thiagarajan, Balasubramanian LU ; Fujii, J. and Michel, E. G.
- organization
- publishing date
- 2006
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- electronic energy, surface phase transition, Pb, photoemission, Cu(100)
- host publication
- Proceedings of the 23th European Conference on Surface Science (Surface Science)
- volume
- 600
- issue
- 18
- pages
- 3851 - 3855
- publisher
- Elsevier
- conference name
- 23th European Conference on Surface Science
- conference location
- Berlin, Germany
- conference dates
- 2005-09-04 - 2005-09-09
- external identifiers
-
- wos:000241450600067
- scopus:33748920346
- ISSN
- 0039-6028
- DOI
- 10.1016/j.susc.2005.11.065
- language
- English
- LU publication?
- yes
- id
- 60ecaaef-da84-45ca-afe9-9dbe62c1bece (old id 384300)
- date added to LUP
- 2016-04-01 17:10:35
- date last changed
- 2022-03-15 05:42:53
@inproceedings{60ecaaef-da84-45ca-afe9-9dbe62c1bece,
abstract = {{The c(5 root 2 x root 2)R45 degrees-Pb/Cu(100) surface phase is investigated by means of angle resolved ultraviolet photoemission and low energy electron diffraction in the temperature range between 300 and 550 K. We identify and characterize a temperature-induced surface phase transition at 440 K from the room temperature e(5 root 2 x root 2) R45 degrees phase to a (root 2 x root 2)R45 degrees structure with split superstructure spots. The phase transition is fully reversible and takes place before the two-dimensional melting of the structure at 520 K. The electronic structure of the split (root 2 x root 2)R45 degrees phase is characterized by a metallic free-electron like surface band. This surface band is backfolded with c(5 root 2 x root 2)R45 degrees periodicity phase at room temperature, giving rise to a surface band gap at the Fermi energy. We propose that a gain in electronic energy explains in part the stability of the c(5 root 2 x root 2)R45 degrees phase. (c) 2006 Elsevier B.V. All rights reserved.}},
author = {{Joco, V. and Martinez-Blanco, J and Segovia, P. and Thiagarajan, Balasubramanian and Fujii, J. and Michel, E. G.}},
booktitle = {{Proceedings of the 23th European Conference on Surface Science (Surface Science)}},
issn = {{0039-6028}},
keywords = {{electronic energy; surface phase transition; Pb; photoemission; Cu(100)}},
language = {{eng}},
number = {{18}},
pages = {{3851--3855}},
publisher = {{Elsevier}},
title = {{Surface phase transition and electronic structure of c(5 root 2 x root 2)R45 degrees-Pb/Cu(100)}},
url = {{http://dx.doi.org/10.1016/j.susc.2005.11.065}},
doi = {{10.1016/j.susc.2005.11.065}},
volume = {{600}},
year = {{2006}},
}