Comparative study of the effects of electron irradiation and natural disorder in single crystals of SrFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$ ($x=$0.35) superconductor

C. P. Strehlow, M. Konczykowski, J. A. Murphy +7

London penetration depth, $\lambda (T)$, was measured in single crystals of SrFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$ ($x=$0.35) iron - based superconductor. The influence of disorder on the transiti…