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TT: Fachverband Tiefe Temperaturen

TT 98: Poster Session: Superconductivity

TT 98.12: Poster

Donnerstag, 15. März 2018, 15:00–19:00, Poster B

Quasiparticle Interference structure in the Spin Density Wave State of Iron Based Superconductors — •Dustin Altenfeld¹, Felix Ahn¹, Peter J. Hirschfeld², and Ilya Eremin¹ — ¹Institut für Theoretische Physik III, Ruhr-Universität Bochum, D-44801 Bochum, Germany — ²Department of Physics, University of Florida, Gainesville, Florida 32611, USA

Using 10-orbital model Hamiltonian we present quasiparticle interference (QPI) calculations in the spin density wave phase (SDW) of Fe-based superconductors (FeSc). We find that the QPI structure can be regarded as a robust way of studying the orbital driven effects on the magnetically ordered phase. In particular, we study the phase-relevant changes induced by the SDW order parameters with orbital structure starting from two-band model up to ab initio based band structure calculation using a realistic model Hamiltonian. We provide the detailed insight for the one dimensional QPI maps seen by STM experiment.