Evidence of pseudogap and absence of spin magnetism in the time-reversal-symmetry-breaking state of Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$

Florian Bärtl, Nadia Stegani, Federico Caglieris +13

Muon-spin-rotation ($\mu$SR) experiments and the observation of a spontaneous Nernst effect indicate time-reversal symmetry breaking (BTRS) at $T_{\mathrm{c}}^{Z2}$ above the supercon…