Abstract
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.
Original language | English |
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Article number | 103703 |
Journal | Journal of the Physical Society of Japan |
Volume | 77 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2008 Oct |
Keywords
- Electronic correlation
- Magnetism
- Muon spin rotation
- Oxypnictide superconductor
ASJC Scopus subject areas
- Physics and Astronomy(all)