Affiner les résultats

Coexistence of static magnetism and superconductivity in SmFeAsO1-xFx as revealed by muon spin rotation

Drew, Alan J. ; Niedermayer, Ch. ; Baker, P. J. ; Pratt, F. L. ; Blundell, S. J. ; Lancaster, T. ; Liu, R. H. ; Wu, G. ; Chen, X. H. ; Watanabe, I. ; Malik, Vivek Kumar ; Dubroka, Adam ; Rössle, Matthias ; Kim, Kyung Wan ; Baines, C. ; Bernhard, Christian

In: Nature Materials, 2009, vol. 8, p. 310 - 314

Coexistence of magnetic fluctuations and superconductivity in the pnictide high temperature superconductor SmFeAsO1-xFx measured by muon spin rotation

Drew, Alan J. ; Pratt, F. L. ; Lancaster, T. ; Blundell, S. J. ; Baker, P. J. ; Liu, R. H. ; Wu, G. ; Chen, X. H. ; Watanabe, I. ; Malik, Vivek Kumar ; Dubroka, Adam ; Kim, Kyung Wan ; Rössle, Matthias ; Bernhard, Christian

In: Physical Review Letters, 2008, vol. 101, no. 9, p. 097010

Muon spin rotation experiments were performed on the pnictide high temperature superconductor SmFeAsO1-xFx 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...

Superconducting energy gap and c-axis plasma frequency of (Nd,Sm)FeAsO0.82F0.18 superconductors from infrared ellipsometry

Dubroka, Adam ; Kim, Kyung Wan ; Rössle, Matthias ; Malik, Vivek Kumar ; Drew, Alan J. ; Liu, R. H. ; Wu, G. ; Chen, X. H. ; Bernhard, Christian

In: Physical Review Letters, 2008, vol. 101, no. 9, p. 097011

We present far-infrared ellipsometric measurements of polycrystalline samples of the pnictide superconductor RFeAsO0.82F0.18 (R=Nd and Sm). We find evidence that the electronic properties are strongly anisotropic such that the optical spectra are dominated by the weakly conducting c-axis response similar to the cuprate high-temperature superconductors....