Physics – Condensed Matter – Superconductivity
Scientific paper
2008-08-18
J. Phys. Soc. Jpn. 77 (2008) 104701
Physics
Condensed Matter
Superconductivity
14 pages, 5 figures
Scientific paper
10.1143/JPSJ.77.104701
We have performed x-ray photoemission spectroscopy on the system of noncentrosymmetric superconductor, Li$_2$(Pd$_x$Pt$_{1-x}$3)B. For Li$_2$Pt$_3$B, we found 2 major peaks with 2 other weak components, and the band calculations were in agreement with the observation. The assignment of valence band features using the calculated partial density of states determined that Pt 5d and B 2p contribute to the density of states at the Fermi level. The effect of antisymmetric spin-orbit coupling on the band structure might have been probed, and the analysis on the effect of Pt incorporation into the system indicates the smooth evolution of electronic structures. We presented the measurements of core levels (Pd 3d, Pt 4f, and B 1s) and discussed the chemical bonding states and electronic structures from them.
Hase Izumi
Hirai Masaaki
Hirata Kazuto
Muraoka Yuji
Muro Takayuki
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