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Science 24 November 2006:
Vol. 314. no. 5803, p. 1213
DOI: 10.1126/science.314.5803.1213c
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This Week in Science

The superconductor strontium ruthenate (Sr2RuO4) is a rather complex material with an unconventional (non-s-wave) pairing symmetry. Unlike other unconventional superconductors, such as the d-wave cuprates, theory suggested and experiments hinted at a p-wave symmetry and a pairing of triplet spins. Theorists also suggested the possibility of a complex p-wave symmetry that breaks time reversal symmetry. Kidwingiri et al. (p. 1267, published online 26 October; see the Perspective by Rice) use phase-sensitive Josephson junction interferometry to confirm the complex p-wave order parameter symmetry in Sr2RuO4, and also present direct evidence for the existence of coexisting chiral superconducting domains.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)