Cooperative order in the weakly magnetic domain of LaFeAsO1-xFx near the doping phase boundary

Masatoshi Hiraishi, Ryosuke Kadono, Masanori Miyazaki, Ichihiro Yamauchi, Akihiro Koda, Kenji M. Kojima, Motoyuki Ishikado, Shuichi Wakimoto, Shin Ichi Shamoto

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

Spatial phase separation into mesoscopic domains of non-magnetic [superconducting (SC) below Tc ≃ 25.5 K] and two kinds of magnetic phases, one showing disordered spin density wave (d-SDW) order and another associated with glassy weak magnetism (WM), are observed below ∼100K by muon spin rotation (μSR) in LaFeAsO1-xFx for x = 0.057(3), which is near the boundary of these phases on the doping phase diagram. In contrast to the competing order observed in the regular SDW phase of Ba(Fe1-xCox)2As2, the WM domain exhibits cooperative coupling of superconducting and magnetic order parameters as inferred from strong diamagnetism and the associated negative shift of μSR frequency just below Tc.

原文English
文章編號103707
期刊Journal of the Physical Society of Japan
83
發行號10
DOIs
出版狀態Published - 2014 十月 15

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)

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