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Abstracts
The analysis of the valence band photoemission spectra of Y_{1-x}Dy_xNi_2B_2C (0≤x≤1) is presented. The valence bands are mainly plotted for Ni 3d, Y 4d and Dy 4f contributions, according to theoretical predictions. The valence bands of Y_{1-x}Dy_xNi_2B_2C compounds markedly change shape with the x parameter, especially in the binding energy region from 3 eV to 14 eV. For large content of Dy (above 55%) the valence band is predominant by Dy 4f states whereas Ni 3d states govern the valence band of yttrium rich compounds. Changing in domination of valence sub-band correlates with plot of superconducting transition temperature T_c with Dy concentration.
Discipline
- 71.20.-b: Electron density of states and band structure of crystalline solids
- 74.25.Jb: Electronic structure (photoemission, etc.)
- 74.70.-b: Superconducting materials other than cuprates(for cuprates, see 74.72.-h; for superconducting films, see 74.78.-w)
- 82.80.Pv: Electron spectroscopy (X-ray photoelectron (XPS), Auger electron spectroscopy (AES), etc.)
Journal
Year
Volume
Issue
Pages
243-246
Physical description
Dates
published
2008-07
received
2007-11-06
Contributors
author
- August Chełkowski Institute of Physics, Uniwersytecka 4, 40-007 Katowice, Poland
author
- August Chełkowski Institute of Physics, Uniwersytecka 4, 40-007 Katowice, Poland
author
- August Chełkowski Institute of Physics, Uniwersytecka 4, 40-007 Katowice, Poland
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv114n137kz