Multiple magnetic orders in LaFeAs1-xPxO uncover universality of iron-pnictide superconductors

Abstract

The Fe-based superconductors are an ideal family of materials to investigate the mechanisms of unconventional superconductivity due to the co-existence of both magnetic and superconducting phases. Here, the authors experimentally demonstrate the presence of three magnetic phases in LaFeAs1-xPxO, which can be tuned as a function of phosphorus content, and discuss how the results connect to wider trends in magnetic and superconducting orders of the Fe-based superconductors.