We report measurements of the de Haas-van Alphen (dHvA) oscillation and a band structure calculation for the pnictide superconductor BaNi2P2, which is isostructural to BaFe2As2, the mother compound of the iron-pnictide high-Tc superconductor (Ba1−xKx)Fe2As2. Six dHvA-frequency branches with frequencies up 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-Tc superconductors. The mass enhancement is about two.
@article{arxiv.0901.3394,
title = {Fermi surface in BaNi$_2$P$_2$},
author = {Taichi Terashima and Motoi Kimata and Hidetaka Satsukawa and Atsushi Harada and Kaori Hazama and Motoharu Imai and Shinya Uji and Hijiri Kito and Akira Iyo and Hiroshi Eisaki and Hisatomo Harima},
journal= {arXiv preprint arXiv:0901.3394},
year = {2009}
}