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Berlin 2018 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 35: Superconductivity: Fe-based Superconductors - 122 and Theory

TT 35.12: Talk

Tuesday, March 13, 2018, 12:30–12:45, A 053

Superconductivity in presence of spin-orbit coupling in strongly electron-doped iron-based superconductors — •Jakob Böker1, Felix Ahn1, Peter Hirschfeld2, and Ilya Eremin11Institut für Theoretische Physik III, Ruhr-Universität Bochum, D-44801 Bochum, Germany — 2Department of Physics, University of Florida, Gainesville, FL 32611, USA

Motivated by recent experimental reports on sizeable spin-orbit coupling (SOC) in the iron pnictides, we study the SOC induced mixing of the spin singlet and the spin triplet pairing for the leading s- and d-wave superconducting instabilities. We focus on highly electron doped systems where only electron dyz/dxz/dxy pockets are present at the M-point of the two-iron unit cell. Using a orbitally projected effective low energy model for the iron pnictides with pairing driven by atomic onsite interactions, we present the gap structure close to Fermi level and discuss consequences of the induced triplet pairing to experiment.

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