期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 78, 期 3, 页码 -出版社
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.78.033706
关键词
Fermi surface; BaNi2P2; de Haas-van Alphen effect; electronic structure; pnictide superconductor
We report measurements of the do Haas-van Alphen (dHvA) oscillation and a hand structure calculation for the pnictide superconductor BaNi2P2, which is isostructural to BaFe2As2, the mother compound of the iron-pnictide high-T-c superconductor (Ba1-xKx)Fe2As2. Six dHvA-frequency branches with frequencies up to similar to 8 kT were observed, and they are in excellent agreement with results of the band-structure calculation. The determined Fermi surface is large, enclosing about one electron and hole per formula unit, and three-dimensional. This is in contrast to the small two-dimensional Fermi Surface expected for the iron-pnictide high-T-c superconductors. The mass enhancement is about two.
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