Superconductivity emerging from an electronic phase separation in the charge ordered phase of RbFe${}_2$As${}_2$

E. Civardi, M. Moroni, M. Babij +2

${}^{75}$As, ${}^{87}$Rb and ${}^{85}$Rb nuclear quadrupole resonance (NQR) and ${}^{87}$Rb nuclear magnetic resonance (NMR) measurements in RbFe${}_2$As${}_2$ iron-based superconductor are pr…