Two-dimensional spin density wave state in LaFeAsO

Ishikado, Motoyuki; Kajimoto, Ryoichi ; Shamoto, Shinichi ; Arai, Masatoshi; Iyo, Akira*; Miyazawa, Kiichi*; Shirage, P. M.*; Kito, Hijiri*; Eisaki, Hiroshi*; Kim, S.-W.*; Hosono, Hideo*; Guidi, T.*; Bewley, R.*; Bennington, S. M.*

The parent compound of Fe oxypnictide superconductor, LaFeAsO, has been studied by pulsed neutron powder inelastic scattering measurement at MERLIN in ISIS. The inelastic scattering intensity along -axis at = 140 K exhibits a prominent asymmetric peak ascribed to 2-dimensional magnetic rod. It persists even in the tetragonal phase up to room temperature, suggesting the existence of strong magnetic interaction.

Language	:	English
Journal	:	Journal of the Physical Society of Japan
Volume	:	78
Number	:	4
Pages	:	p.043705_1 - 043705_4
Publication Year/Month	:	2009/04
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Paper URL	:	https://doi.org/10.1143/JPSJ.78.043705
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Keywords	:	no keyword
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Cooperating Institute	:	TRIP; 科学技術振興機構

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Registration No. : AA20090156
JAEA Abstracts No. : 37001025
Paper Submission No. : 6018

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