Regensburg 2016 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 46: Superconductivity: Fe-based Superconductors - FeSe

TT 46.8: Vortrag

Mittwoch, 9. März 2016, 12:15–12:30, H19

Interplay between iCDW order and electronic excitations in FeSe — •Markus Klug and Joerg Schmalian — Institute for Theory of Condensed Matter, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany

The origin of the nematic transition at 90K in FeSe and its underlying mechanism including its relevance for superconductivity remain unknown. Recently, the possibility of imaginary charge density wave order (iCDW), which breaks translational and time reversal symmetry, was proposed [1]. In this talk the implications of iCDW order in elastic neutron scattering and electronic Raman scattering are analyzed. We discuss the emergence of a spin and charge gap as well as the possibility of new collective modes.
A. V. Chubukov, R. M. Fernandes and J. Schmalian,

PRB 91, 201105(R) (2015)