Fermi surface in BaNi${}_2$P${}_2$

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.

To appear in J. Phys. Soc. Jpn., Vol. 78, No. 3

References in corpus (6)

• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• LaFeAsO${}_{1-x}$F${}_x$: A low carrier density superconductor near itinerant magnetism
• Thorium-doping induced superconductivity up to 56 K in Gd1-xThxFeAsO
• Superconductivity at 53.5 K in GdFeAsO1-delta
• Nickel-based phosphide superconductor with infinite-layer structure, BaNi2P2
• Density functional study of BaNi${}_2$As${}_2$: Electronic structure, phonons and electron-phonon superconductivity

Cited by in corpus (1)

• Superconductivity without Fe or Ni in the phosphides BaIr2P2 and BaRh2P2