Coexistence of supercondcutivity and magnetism in LaFeAs(O 0.94F0.06) probed by muon spin relaxation

Soshi Takeshita; Ryosuke Kadono; Masatoshi Hiraishi; Masanori Miyazaki; Akihiro Koda; Yoichi Kamihara; Hideo Hosono

doi:10.1143/JPSJ.77.103703

Coexistence of supercondcutivity and magnetism in LaFeAs(O _0.94F_0.06) probed by muon spin relaxation

Soshi Takeshita, Ryosuke Kadono, Masatoshi Hiraishi, Masanori Miyazaki, Akihiro Koda, Yoichi Kamihara, Hideo Hosono

Research output: Contribution to journal › Article

30 Citations (Scopus)

Abstract

The presence of macroscopic phase separation into superconducting and spin-glass-like magnetic phases in LaFeAs(O_1-xF_x) is demonstrated by muon spin rotation measurement in a sample near the phase boundary (x = 0:06). Both magnetism and superconductivity develop simultaneously below a common critical temperature, T_m ≃ T_c ≃ 18 K. This remarkable accordance strongly suggests that the electronic correlations leading to these two competing ground states share a common origin.

Original language	English
Article number	103703
Journal	Journal of the Physical Society of Japan
Volume	77
Issue number	10
DOIs	https://doi.org/10.1143/JPSJ.77.103703
Publication status	Published - 2008 Oct 1
Externally published	Yes

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Keywords

Electronic correlation
Magnetism
Muon spin rotation
Oxypnictide superconductor

ASJC Scopus subject areas

Physics and Astronomy(all)

Cite this

Takeshita, S., Kadono, R., Hiraishi, M., Miyazaki, M., Koda, A., Kamihara, Y., & Hosono, H. (2008). Coexistence of supercondcutivity and magnetism in LaFeAs(O _0.94F_0.06) probed by muon spin relaxation. Journal of the Physical Society of Japan, 77(10), [103703]. https://doi.org/10.1143/JPSJ.77.103703

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AU - Koda, Akihiro

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AB - The presence of macroscopic phase separation into superconducting and spin-glass-like magnetic phases in LaFeAs(O1-xFx) is demonstrated by muon spin rotation measurement in a sample near the phase boundary (x = 0:06). Both magnetism and superconductivity develop simultaneously below a common critical temperature, Tm ≃ Tc ≃ 18 K. This remarkable accordance strongly suggests that the electronic correlations leading to these two competing ground states share a common origin.

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10.1143/JPSJ.77.103703