Hard and soft X-ray photoemission spectroscopies of ferromagnetic Sm 4As3

A. Yamasaki; A. Sekiyama; M. Tsunekawa; S. Imada; A. Ochiai; C. Dallera; L. Braicovich; T. L. Lee; S. Suga

doi:10.1016/j.elspec.2005.01.017

Hard and soft X-ray photoemission spectroscopies of ferromagnetic Sm ₄As₃

A. Yamasaki, A. Sekiyama, M. Tsunekawa, S. Imada, A. Ochiai, C. Dallera, L. Braicovich, T. L. Lee, S. Suga

SCI - Physics

Research output: Contribution to journal › Article

Abstract

We have investigated the bulk and surface electronic structures of Sm ₄As₃ by using hard and soft X-ray photoemission spectroscopies (PESs). The valence band spectral shape changes much with photon energies (hν s) due to the variation of both photoionization cross sections and bulk sensitivity. PES with the wide range of hν s between 220 and 2450 eV demonstrates that the valence of the Sm ions is definitely trivalent in the bulk and divalent at the surface.

Original language	English
Pages (from-to)	617-619
Number of pages	3
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	144-147
DOIs	https://doi.org/10.1016/j.elspec.2005.01.017
Publication status	Published - 2005 Jun 1

Keywords

Bulk sensitive
Hard X-ray
Photoemission
SmAs
Soft X-ray

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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10.1016/j.elspec.2005.01.017

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Yamasaki, A., Sekiyama, A., Tsunekawa, M., Imada, S., Ochiai, A., Dallera, C., Braicovich, L., Lee, T. L., & Suga, S. (2005). Hard and soft X-ray photoemission spectroscopies of ferromagnetic Sm ₄As₃. Journal of Electron Spectroscopy and Related Phenomena, 144-147, 617-619. https://doi.org/10.1016/j.elspec.2005.01.017

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abstract = "We have investigated the bulk and surface electronic structures of Sm 4As3 by using hard and soft X-ray photoemission spectroscopies (PESs). The valence band spectral shape changes much with photon energies (hν s) due to the variation of both photoionization cross sections and bulk sensitivity. PES with the wide range of hν s between 220 and 2450 eV demonstrates that the valence of the Sm ions is definitely trivalent in the bulk and divalent at the surface.",

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T1 - Hard and soft X-ray photoemission spectroscopies of ferromagnetic Sm 4As3

AU - Yamasaki, A.

AU - Sekiyama, A.

AU - Tsunekawa, M.

AU - Imada, S.

AU - Ochiai, A.

AU - Dallera, C.

AU - Braicovich, L.

AU - Lee, T. L.

AU - Suga, S.

PY - 2005/6/1

Y1 - 2005/6/1

N2 - We have investigated the bulk and surface electronic structures of Sm 4As3 by using hard and soft X-ray photoemission spectroscopies (PESs). The valence band spectral shape changes much with photon energies (hν s) due to the variation of both photoionization cross sections and bulk sensitivity. PES with the wide range of hν s between 220 and 2450 eV demonstrates that the valence of the Sm ions is definitely trivalent in the bulk and divalent at the surface.

AB - We have investigated the bulk and surface electronic structures of Sm 4As3 by using hard and soft X-ray photoemission spectroscopies (PESs). The valence band spectral shape changes much with photon energies (hν s) due to the variation of both photoionization cross sections and bulk sensitivity. PES with the wide range of hν s between 220 and 2450 eV demonstrates that the valence of the Sm ions is definitely trivalent in the bulk and divalent at the surface.

KW - Bulk sensitive

KW - Hard X-ray

KW - Photoemission

KW - SmAs

KW - Soft X-ray

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