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Persistent URL	http://purl.org/net/epubs/work/50831
Record Status	Checked
Record Id	50831
Title	Two-dimensional spin density wave state in LaFeAsO
Contributors	M Ishikado (TRIP, Japan) (Pr.Au.), R Kajimoto (TRIP, Japan), S Shamoto (JAEA), M Arai (JAEA), A Iyo (TRIP, Japan), K Miyazawa (TRIP, Japan), P Shirage (TRIP, Japan), H Kito (TRIP, Japan), H Eisaki (TRIP, Japan), S Kim (Tokyo Inst. Tech.), H Hosono (Tokyo Inst. Tech.), T Guidi (STFC Rutherford Appleton Lab.), R Bewley (STFC Rutherford Appleton Lab.), S Bennington (STFC Rutherford Appleton Lab.)
Abstract	The parent Compound of the Fe oxypnictide superconductor, LaFeAsO, has been Studied by Pulsed neutron powder inelastic scattering measurement. The inelastic scattering intensity along the Q-axis at T = 140 K exhibits a prominent asymmetric peak ascribed to the (pi, pi, l) magnetic rod, suggesting the two-dimensionality of the spin density wave above the magnetic transition temperature. It persists even in the tetragonal phase Lip to room temperature, which is well above the magnetic transition temperature, corresponding to two antiferromagnetic sublattices or domains with a strong effective antiferromagnetic interaction J(2) between next-nearest-neighbour Fe magnetic moments in a single Fe square lattice
Organisation	ISIS , ISIS-MERLIN , STFC
Keywords	Physics , SUPERCONDUCTIVITY
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Journal Article	J Phys Soc Jpn 78, no. 4 (2009): 043705.	doi:10.1143/JPSJ.78.043705		2009