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Geometry of the valence transition induced surface reconstruction of Sm(0001).

Lundgren, Edvin LU ; Andersen, Jesper N LU ; Nyholm, Ralf LU ; Torrelles, X; Rius, J; Delin, A; Grechnev, A; Eriksson, O; Konvicka, C and Schmid, M, et al. (2002) In Physical Review Letters 88(13). p.136102-136102
Abstract
We present a structural determination of the surface reconstruction of the Sm(0001) surface using surface x-ray diffraction, scanning tunneling microscopy, and ab initio calculations. The reconstruction is associated with a large (22%) expansion of the atomic radius for the top monolayer surface Sm atoms. The mechanism driving the surface reconstruction in Sm is unique among all elements and is connected to the strong correlations of the 4f electrons in Sm and the intermediate valence observed in certain Sm compounds. The atoms constituting the top monolayer of Sm(0001) have vastly different chemical properties compared to the layer underneath and behave as if they were an adsorbate of a different chemical species.
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Contribution to journal
publication status
published
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Physical Review Letters
volume
88
issue
13
pages
136102 - 136102
publisher
American Physical Society
external identifiers
  • wos:000174542200027
  • scopus:4444243203
ISSN
1079-7114
DOI
10.1103/PhysRevLett.88.136102
language
English
LU publication?
yes
id
82846164-c920-4930-a66b-215c32f68b49 (old id 107674)
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http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11955110&dopt=Abstract
date added to LUP
2007-07-23 14:27:22
date last changed
2017-01-01 04:53:09
@article{82846164-c920-4930-a66b-215c32f68b49,
  abstract     = {We present a structural determination of the surface reconstruction of the Sm(0001) surface using surface x-ray diffraction, scanning tunneling microscopy, and ab initio calculations. The reconstruction is associated with a large (22%) expansion of the atomic radius for the top monolayer surface Sm atoms. The mechanism driving the surface reconstruction in Sm is unique among all elements and is connected to the strong correlations of the 4f electrons in Sm and the intermediate valence observed in certain Sm compounds. The atoms constituting the top monolayer of Sm(0001) have vastly different chemical properties compared to the layer underneath and behave as if they were an adsorbate of a different chemical species.},
  author       = {Lundgren, Edvin and Andersen, Jesper N and Nyholm, Ralf and Torrelles, X and Rius, J and Delin, A and Grechnev, A and Eriksson, O and Konvicka, C and Schmid, M and Varga, P},
  issn         = {1079-7114},
  language     = {eng},
  number       = {13},
  pages        = {136102--136102},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Geometry of the valence transition induced surface reconstruction of Sm(0001).},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.88.136102},
  volume       = {88},
  year         = {2002},
}