Published September 2005
| Version v1
Journal article
Photoemission spectroscopy of Sm4As3 using soft and hard x-rays
Creators
- 1. Osaka Univ., Graduate School of Engineering Science, Toyonaka, Osaka (Japan)
- 2. INFM-Dipartimento di Fisica, Politecnico di Milano, Milano (IT)
- 3. European Synchrotron Radiation Facility, Grenoble (FR)
- 4. Tohoku Univ., Graduate School of Science, Sendai, Miyagi (JP)
Description
The bulk and surface electronic structures of Sm4As3 have been investigated by hard and soft X-ray photoemission spectroscopies (PESs). PES with a wide range of photon energies (hν's) between 220 and 2450eV demonstrates the absence of valence mixing in both high- and low-temperature phases, that is, the valence of Sm ions is definitely trivalent in the bulk and divalent on the surface. Atomic multiplet calculations taking into account the bulk and surface spectral weights at each hν well reproduce the experimental valence band PES an Sm 3d core-level spectra, supporting the valence difference between bulk and surface in Sm4As3. (author)
Additional details
Publishing Information
- Journal Title
- Journal of the Physical Society of Japan
- Journal Volume
- 74
- Journal Issue
- 9
- Journal Page Range
- p. 2538-2543
- ISSN
- 0031-9015
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 37019082
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; BINDING ENERGY; ELECTRONIC STRUCTURE; KONDO EFFECT; MONOCRYSTALS; PHOTOEMISSION; SAMARIUM ARSENIDES; SENSITIVITY; SOFT X RADIATION; VALENCE; X-RAY PHOTOELECTRON SPECTROSCOPY; X-RAY SPECTROSCOPY
- Descriptors DEC
- ARSENIC COMPOUNDS; ARSENIDES; CRYSTALS; ELECTROMAGNETIC RADIATION; ELECTRON SPECTROSCOPY; EMISSION; ENERGY; IONIZING RADIATIONS; PHOTOELECTRON SPECTROSCOPY; PNICTIDES; RADIATIONS; RARE EARTH COMPOUNDS; SAMARIUM COMPOUNDS; SECONDARY EMISSION; SPECTROSCOPY; X RADIATION
Optional Information
- Notes
- 34 refs., 7 figs., 2 tabs.