Macroscopic phase separation of superconductivity and ferromagnetism in Sr_0.5Ce_0.5FBiS_2-x Se _x revealed by μSR.

ABSTRACT: The compound Sr_0.5Ce_0.5FBiS₂ belongs to the intensively studied family of layered BiS₂ superconductors. It attracts special attention because superconductivity at T _sc  = 2.8 K was found to coexist with local-moment ferromagnetic order with a Curie temperature T _C  = 7.5 K. Recently it was reported that upon replacing S by Se T _C drops and ferromagnetism becomes of an itinerant nature. At the same time T _sc increases and it was argued superconductivity coexists with itinerant ferromagnetism. Here we report a muon spin rotation and relaxation study (μSR) conducted to investigate the coexistence of superconductivity and ferromagnetic order in Sr_0.5Ce_0.5FBiS_2-x Se _x

SUBMITTER: Nikitin AM 

PROVIDER: S-EPMC5727222 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature