Journal
PHYSICAL REVIEW LETTERS
Volume 101, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.097010
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Funding
- Schweizer Nationalfonds (SNF) [200020-119784]
- Deutsche Forschungsgemeinschaft (DFG) [BE2684/1-3]
- U.K. EPSRC
- Swiss National Science Foundation (SNF) [200020-119784] Funding Source: Swiss National Science Foundation (SNF)
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Muon spin rotation experiments were performed on the pnictide high temperature superconductor SmFeAsO(1-x)F(x) with x = 0. 18 and 0.3. We observed an unusual enhancement of slow spin fluctuations in the vicinity of the superconducting transition which suggests that the spin fluctuations contribute to the formation of an unconventional superconducting state. An estimate of the in-plane penetration depth lambda(ab)(0) = 190(5) nm was obtained, which confirms that the pnictide superconductors obey an Uemura-style relationship between T(c) and lambda(ab)(0)(-2).
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