Phys. Rev. Lett. 102, 227007 (2009) [4 pages]Possible Phase-Sensitive Tests of Pairing Symmetry in Pnictide SuperconductorsReceived 23 December 2008; published 5 June 2009 The discovery of the new class of pnictide superconductors has engendered a controversy about their pairing symmetry, with proposals ranging from an extended s wave or “s±” symmetry to nodal or nodeless d-wave symmetry to still more exotic order parameters such as p wave. In this Letter, building on the earlier, similar work performed for the cuprates, we propose several phase-sensitive Josephson interferometry experiments, each of which may allow resolution of the issue. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.227007
DOI:
10.1103/PhysRevLett.102.227007
PACS:
74.20.Rp, 71.55.−i, 74.25.Nf, 76.60.−k
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