Unfolding the electronic structure of Ca$_{10}$(Fe$_{1-x}$Pt$_x$As)$_{10}$(Pt$_n$As$_8$)

Tom Berlijn

doi:10.1103/PhysRevB.89.104511

paper

Unfolding the electronic structure of Ca $_{10}$ (Fe $_{1 - x}$ Pt $_{x}$ As) $_{10}$ (Pt $_{n}$ As $_{8}$ )

arXiv:1401.0298 · doi:10.1103/PhysRevB.89.104511

Abstract

The platinum iron arsenides Ca $_{10}$ (Fe $_{1 - x}$ Pt $_{x}$ As) $_{10}$ (Pt $_{n}$ As $_{8}$ ) are the first Fe based superconductors with metallic spacer layers. Furthermore they display a large variation in their critical temperatures depending on the amount of Pt in their spacer layers: $(n = 3, 4)$ . To gain more insight into the role of the spacer layer the electronic structures of the iron arsenic platenides are represented in the momentum space of the underlying Fe sublattice using a first principles unfolding method. We find that Ca $_{10}$ (FeAs) $_{10}$ (Pt $_{4}$ As $_{8}$ ), contrary to Ca $_{10}$ (FeAs) $_{10}$ (Pt $_{3}$ As $_{8}$ ), shows a net electron doping and a non-negligible interlayer coupling. Both effects could account for the difference in the critical temperatures.

Unfolding the electronic structure of Ca $_{10}$ (Fe $_{1 - x}$ Pt $_{x}$ As) $_{10}$ (Pt $_{n}$ As $_{8}$ )

Abstract

References in corpus (8)

Cited by in corpus (5)

Unfolding the electronic structure of Ca10​(Fe1−x​Ptx​As)10​(Ptn​As8​)

Abstract

References in corpus (8)

Cited by in corpus (5)

Unfolding the electronic structure of Ca $_{10}$ (Fe $_{1 - x}$ Pt $_{x}$ As) $_{10}$ (Pt $_{n}$ As $_{8}$ )