Pairing mechanism in Fe pnictide superconductors

Abstract

By applying an exact unitary transformation to a two-band hamiltonian which also includes the effects due to large pnictogen polarizabilities, we show that an attractive spin-mediated Hubbard term appears in the $d_{xz}$, $d_{yz}$ nearest-neighbour channel. This pairing mechanism implies a singlet superconducting order parameter in iron pnictides.

4 pages, 3 figures

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Cited by in corpus (2)

• Photocatalytic H2 generation using dewetted Pt-decorated TiO2 nanotubes - Optimized dewetting and oxide crystallization by a multiple annealing process
• Extended Hubbard model of superconductivity driven by charge fluctuations in iron-pnictides