Coordination-dependent valence state of Sm adsorbed on Cu(1 0 0) and (1 1 0) studied by STM and XPS

Yasuo Nakayama; Hiroshi Kondoh; Toshiaki Ohta

doi:10.1016/j.susc.2006.03.004

Coordination-dependent valence state of Sm adsorbed on Cu(1 0 0) and (1 1 0) studied by STM and XPS

Yasuo Nakayama, Hiroshi Kondoh, Toshiaki Ohta

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

8 Citations (Scopus)

Abstract

Geometric and electronic structures of Sm adlayers on Cu(1 0 0) and (1 1 0) were studied by scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS). The present results, in addition to the previous results for Sm/Cu(1 1 1) [Y. Nakayama, H. Kondoh, T. Ohta, Surf. Sci. 552 (2004) 53], indicate that the valence state of Sm adsorbed on Cu surfaces is determined by Sm-Sm and Sm-Cu coordination numbers. We propose that the valence state of the adsorbed Sm atoms can be explained by a simple thermodynamic equation including the coordination numbers.

Original language	English
Pages (from-to)	2403-2410
Number of pages	8
Journal	Surface Science
Volume	600
Issue number	12
DOIs	https://doi.org/10.1016/j.susc.2006.03.004
Publication status	Published - 2006 Jun 15
Externally published	Yes

Keywords

Coordination number
Copper
Growth
Lanthanides
Mixed-valence
Morphology
Samarium
Scanning tunneling microscopy
X-ray photoelectron spectroscopy

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.susc.2006.03.004

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@article{97a0419d84284063ae883a16c75f0b1d,

title = "Coordination-dependent valence state of Sm adsorbed on Cu(1 0 0) and (1 1 0) studied by STM and XPS",

abstract = "Geometric and electronic structures of Sm adlayers on Cu(1 0 0) and (1 1 0) were studied by scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS). The present results, in addition to the previous results for Sm/Cu(1 1 1) [Y. Nakayama, H. Kondoh, T. Ohta, Surf. Sci. 552 (2004) 53], indicate that the valence state of Sm adsorbed on Cu surfaces is determined by Sm-Sm and Sm-Cu coordination numbers. We propose that the valence state of the adsorbed Sm atoms can be explained by a simple thermodynamic equation including the coordination numbers.",

keywords = "Coordination number, Copper, Growth, Lanthanides, Mixed-valence, Morphology, Samarium, Scanning tunneling microscopy, X-ray photoelectron spectroscopy",

author = "Yasuo Nakayama and Hiroshi Kondoh and Toshiaki Ohta",

note = "Funding Information: Y.N. would like to thank Prof. S. Hasegawa and Dr. I. Matsuda of The University of Tokyo for helpful discussion. This work was financially supported by The 21st Century COE Program from the Ministry of Education, Culture, Sports, Science and Technology.",

year = "2006",

month = jun,

day = "15",

doi = "10.1016/j.susc.2006.03.004",

language = "English",

volume = "600",

pages = "2403--2410",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier",

number = "12",

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TY - JOUR

T1 - Coordination-dependent valence state of Sm adsorbed on Cu(1 0 0) and (1 1 0) studied by STM and XPS

AU - Nakayama, Yasuo

AU - Kondoh, Hiroshi

AU - Ohta, Toshiaki

N1 - Funding Information: Y.N. would like to thank Prof. S. Hasegawa and Dr. I. Matsuda of The University of Tokyo for helpful discussion. This work was financially supported by The 21st Century COE Program from the Ministry of Education, Culture, Sports, Science and Technology.

PY - 2006/6/15

Y1 - 2006/6/15

N2 - Geometric and electronic structures of Sm adlayers on Cu(1 0 0) and (1 1 0) were studied by scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS). The present results, in addition to the previous results for Sm/Cu(1 1 1) [Y. Nakayama, H. Kondoh, T. Ohta, Surf. Sci. 552 (2004) 53], indicate that the valence state of Sm adsorbed on Cu surfaces is determined by Sm-Sm and Sm-Cu coordination numbers. We propose that the valence state of the adsorbed Sm atoms can be explained by a simple thermodynamic equation including the coordination numbers.

AB - Geometric and electronic structures of Sm adlayers on Cu(1 0 0) and (1 1 0) were studied by scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS). The present results, in addition to the previous results for Sm/Cu(1 1 1) [Y. Nakayama, H. Kondoh, T. Ohta, Surf. Sci. 552 (2004) 53], indicate that the valence state of Sm adsorbed on Cu surfaces is determined by Sm-Sm and Sm-Cu coordination numbers. We propose that the valence state of the adsorbed Sm atoms can be explained by a simple thermodynamic equation including the coordination numbers.

KW - Coordination number

KW - Copper

KW - Growth

KW - Lanthanides

KW - Mixed-valence

KW - Morphology

KW - Samarium

KW - Scanning tunneling microscopy

KW - X-ray photoelectron spectroscopy

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UR - http://www.scopus.com/inward/citedby.url?scp=33746814851&partnerID=8YFLogxK

U2 - 10.1016/j.susc.2006.03.004

DO - 10.1016/j.susc.2006.03.004

M3 - Article

AN - SCOPUS:33746814851

SN - 0039-6028

VL - 600

SP - 2403

EP - 2410

JO - Surface Science

JF - Surface Science

IS - 12

ER -

Coordination-dependent valence state of Sm adsorbed on Cu(1 0 0) and (1 1 0) studied by STM and XPS

Abstract

Keywords

ASJC Scopus subject areas

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