STM and ARPES studies on Fe/vicinal Au(1 1 1)

Susumu Shiraki; Hideki Fujisawa; Masashi Nantoh; Maki Kawai

doi:10.1016/j.elspec.2004.02.021

STM and ARPES studies on Fe/vicinal Au(1 1 1)

Susumu Shiraki, Hideki Fujisawa, Masashi Nantoh, Maki Kawai

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

3 Citations (Scopus)

Abstract

We have investigated the growth of Fe on Au(455) and Au(788) surfaces by scanning tunneling microscopy and examined the electronic structures by angle-resolved photoemission spectroscopy. We found that deposited Fe atoms adsorb at the lower corners of the steps, and form one-dimensional monatomic Fe chains. In addition, Fe deposition has significant influence on the surface potential of the regularly stepped surface. After decorating the step edges with monatomic Fe rows, photoemission spectra measured in the direction perpendicular to the steps show parabolic dispersion and a downward energy shift of the bottom of the surface state band. This result suggests that Fe adatoms at step edges act as attractive scatterers and reduce the step potential barrier height.

Original language	English
Pages (from-to)	177-181
Number of pages	5
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	137-140
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.elspec.2004.02.021
Publication status	Published - 2004 Jul 1

Keywords

Angle-resolved photoemission spectroscopy
Gold
Growth
Iron
Scanning tunneling microscopy
Surface state

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

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abstract = "We have investigated the growth of Fe on Au(455) and Au(788) surfaces by scanning tunneling microscopy and examined the electronic structures by angle-resolved photoemission spectroscopy. We found that deposited Fe atoms adsorb at the lower corners of the steps, and form one-dimensional monatomic Fe chains. In addition, Fe deposition has significant influence on the surface potential of the regularly stepped surface. After decorating the step edges with monatomic Fe rows, photoemission spectra measured in the direction perpendicular to the steps show parabolic dispersion and a downward energy shift of the bottom of the surface state band. This result suggests that Fe adatoms at step edges act as attractive scatterers and reduce the step potential barrier height.",

keywords = "Angle-resolved photoemission spectroscopy, Gold, Growth, Iron, Scanning tunneling microscopy, Surface state",

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T1 - STM and ARPES studies on Fe/vicinal Au(1 1 1)

AU - Shiraki, Susumu

AU - Fujisawa, Hideki

AU - Nantoh, Masashi

AU - Kawai, Maki

PY - 2004/7/1

Y1 - 2004/7/1

N2 - We have investigated the growth of Fe on Au(455) and Au(788) surfaces by scanning tunneling microscopy and examined the electronic structures by angle-resolved photoemission spectroscopy. We found that deposited Fe atoms adsorb at the lower corners of the steps, and form one-dimensional monatomic Fe chains. In addition, Fe deposition has significant influence on the surface potential of the regularly stepped surface. After decorating the step edges with monatomic Fe rows, photoemission spectra measured in the direction perpendicular to the steps show parabolic dispersion and a downward energy shift of the bottom of the surface state band. This result suggests that Fe adatoms at step edges act as attractive scatterers and reduce the step potential barrier height.

AB - We have investigated the growth of Fe on Au(455) and Au(788) surfaces by scanning tunneling microscopy and examined the electronic structures by angle-resolved photoemission spectroscopy. We found that deposited Fe atoms adsorb at the lower corners of the steps, and form one-dimensional monatomic Fe chains. In addition, Fe deposition has significant influence on the surface potential of the regularly stepped surface. After decorating the step edges with monatomic Fe rows, photoemission spectra measured in the direction perpendicular to the steps show parabolic dispersion and a downward energy shift of the bottom of the surface state band. This result suggests that Fe adatoms at step edges act as attractive scatterers and reduce the step potential barrier height.

KW - Angle-resolved photoemission spectroscopy

KW - Gold

KW - Growth

KW - Iron

KW - Scanning tunneling microscopy

KW - Surface state

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