Unconventional superconductivity with a sign reversal in the order parameter of LaFeAsO1-xFx.
Phys Rev Lett. 2008 Aug 1;101(5):057003. doi: 10.1103/PhysRevLett.101.057003. Epub 2008 Jul 29.
Phys Rev Lett. 2008.
PMID: 18764420