Anomalous field evolution of the mixed-state linewidth in the second superconducting dome of LaFeAsO${}_{1-x}{M}_x$ ($M=\mathrm{F},\mathrm{H}$)

Rustem Khasanov, Pierre Dalmas de Réotier, Samuele Sanna +9

We report a transverse-field muon-spin rotation/relaxation ($\hat{I}¼$SR) study of the internal-field distribution in the mixed state of LaFeAsO${}_{0.89}$F${}_{0.11}$ and LaFeAsO${}_{0.75}$H$…