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arXiv · 0901.3394

Fermi surface in BaNi$_2$P$_2$

Taichi Terashima·Motoi Kimata·Hidetaka Satsukawa·Atsushi Harada·Kaori Hazama·Motoharu Imai·Shinya Uji·Hijiri Kito·Akira Iyo·Hiroshi Eisaki·Hisatomo Harima
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Abstract

We report measurements of the de Haas-van Alphen (dHvA) oscillation and a band structure calculation for the pnictide superconductor BaNi$_2$P$_2$, which is isostructural to BaFe$_2$As$_2$, the mother compound of the iron-pnictide high-$T_c$ superconductor (Ba$_{1-x}$K$_x$)Fe$_2$As$_2$. Six dHvA-frequency branches with frequencies up to $\sim$8 kT were observed, and they are in excellent agreement with results of the band-structure calculation. The determined Fermi surface is large, enclosing about one electron and hole per formula unit, and three-dimensional. This is in contrast to the small two-dimensional Fermi surface expected for the iron-pnictide high-$T_c$ superconductors. The mass enhancement is about two.

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Taichi Terashima, Motoi Kimata, Hidetaka Satsukawa, Atsushi Harada, Kaori Hazama, Motoharu Imai, Shinya Uji, Hijiri Kito, Akira Iyo, Hiroshi Eisaki, Hisatomo Harima. 2009-02-06. Fermi surface in BaNi$_2$P$_2$. https://doi.org/10.1143/jpsj.78.033706

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