Journal
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume 77, Issue 10, Pages -Publisher
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.77.103703
Keywords
oxypnictide superconductor; muon spin rotation; electronic correlation; magnetism
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Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan
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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, T-m similar or equal to T-c similar or equal to 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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