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

Edvin Lundgren; Jesper N Andersen; Ralf Nyholm; X Torrelles; J Rius; A Delin; A Grechnev; O Eriksson; C Konvicka; M Schmid; P Varga

doi:10.1103/PhysRevLett.88.136102

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

Edvin Lundgren, Jesper N Andersen, Ralf Nyholm, X Torrelles, J Rius, A Delin, A Grechnev, O Eriksson, C Konvicka, M Schmid, P Varga

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	136102-136102
Journal	Physical Review Letters
Volume	88
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.88.136102
Publication status	Published - 2002

Subject classification (UKÄ)

Natural Sciences
Physical Sciences
Atom and Molecular Physics and Optics

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title = "Geometry of the valence transition induced surface reconstruction of Sm(0001).",

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 = "Edvin Lundgren and Andersen, {Jesper N} and Ralf Nyholm and X Torrelles and J Rius and A Delin and A Grechnev and O Eriksson and C Konvicka and M Schmid and P Varga",

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doi = "10.1103/PhysRevLett.88.136102",

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T1 - Geometry of the valence transition induced surface reconstruction of Sm(0001).

AU - Lundgren, Edvin

AU - Andersen, Jesper N

AU - Nyholm, Ralf

AU - Torrelles, X

AU - Rius, J

AU - Delin, A

AU - Grechnev, A

AU - Eriksson, O

AU - Konvicka, C

AU - Schmid, M

AU - Varga, P

PY - 2002

Y1 - 2002

N2 - 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.

AB - 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.

U2 - 10.1103/PhysRevLett.88.136102

DO - 10.1103/PhysRevLett.88.136102

M3 - Article

SN - 1079-7114

VL - 88

SP - 136102

EP - 136102

JO - Physical Review Letters

JF - Physical Review Letters

IS - 13

ER -

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

Abstract

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