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Titolo: Long- to short-range magnetic order in fluorine-doped CeFeAsO
Autori: 
Data di pubblicazione: 2011
Rivista: 
PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS  
Abstract: The evolution of the antiferromagnetic order parameter in CeFeAsO1−xFx as a function of the fluorine content x was investigated primarily via zero-field muon-spin spectroscopy. The long-range magnetic order observed in the undoped compound gradually turns into a short-range order at x=0.04, seemingly accompanied or induced by a drastic reduction of the magnetic moment of the iron ions. Superconductivity appears upon a further increase in doping (x>0.04) when, unlike in the cuprates, the Fe magnetic moments become even weaker. The resulting phase diagram evidences the presence of a crossover region, where the superconducting and the magnetic order parameters coexist on a nanoscopic range.
Handle: http://hdl.handle.net/11584/82781
Tipologia:1.1 Articolo in rivista

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