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

We present a structural determination of the surface reconstruction of the Sm(0001) surface using surface x-ray diffraction, scanning tunneling microscopy, and {\it ab initio} calculations. The reconstruction is associated with a large (22%) expansion of the atomic radius for the top monolayer surfa...

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Detalles Bibliográficos
Autores principales: Lundgren, E, Andersen, J N, Nyholm, R, Torrelles, X, Rius, J, Delin, A, Grechnev, A, Eriksson, O, Konvicka, C, Schmid, M, Varga, P
Lenguaje:eng
Publicado: 2002
Materias:
XX
Acceso en línea:http://cds.cern.ch/record/646683
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author Lundgren, E
Andersen, J N
Nyholm, R
Torrelles, X
Rius, J
Delin, A
Grechnev, A
Eriksson, O
Konvicka, C
Schmid, M
Varga, P
author_facet Lundgren, E
Andersen, J N
Nyholm, R
Torrelles, X
Rius, J
Delin, A
Grechnev, A
Eriksson, O
Konvicka, C
Schmid, M
Varga, P
author_sort Lundgren, E
collection CERN
description We present a structural determination of the surface reconstruction of the Sm(0001) surface using surface x-ray diffraction, scanning tunneling microscopy, and {\it 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.
id cern-646683
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
record_format invenio
spelling cern-6466832019-09-30T06:29:59Zhttp://cds.cern.ch/record/646683engLundgren, EAndersen, J NNyholm, RTorrelles, XRius, JDelin, AGrechnev, AEriksson, OKonvicka, CSchmid, MVarga, PGeometry of the valence transition induced surface reconstruction of Sm(0001)XXWe present a structural determination of the surface reconstruction of the Sm(0001) surface using surface x-ray diffraction, scanning tunneling microscopy, and {\it 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.IC-2002-42oai:cds.cern.ch:6466832002
spellingShingle XX
Lundgren, E
Andersen, J N
Nyholm, R
Torrelles, X
Rius, J
Delin, A
Grechnev, A
Eriksson, O
Konvicka, C
Schmid, M
Varga, P
Geometry of the valence transition induced surface reconstruction of Sm(0001)
title Geometry of the valence transition induced surface reconstruction of Sm(0001)
title_full Geometry of the valence transition induced surface reconstruction of Sm(0001)
title_fullStr Geometry of the valence transition induced surface reconstruction of Sm(0001)
title_full_unstemmed Geometry of the valence transition induced surface reconstruction of Sm(0001)
title_short Geometry of the valence transition induced surface reconstruction of Sm(0001)
title_sort geometry of the valence transition induced surface reconstruction of sm(0001)
topic XX
url http://cds.cern.ch/record/646683
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AT andersenjn geometryofthevalencetransitioninducedsurfacereconstructionofsm0001
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