Anisotropy of the superconducting state in Sr2RuO4

C. Rastovski, C. D. Dewhurst, W. J. Gannon, D. C. Peets, H. Takatsu, Y. Maeno, M. Ichioka, K. Machida, M. R. Eskildsen

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


Despite intense studies the exact nature of the order parameter in superconducting Sr2RuO4 remains unresolved. We have used small-angle neutron scattering to study the vortex lattice in Sr 2RuO4 with the field applied close to the basal plane, taking advantage of the transverse magnetization. We measured the intrinsic superconducting anisotropy between the c axis and the Ru-O basal plane (∼60), which greatly exceeds the upper critical field anisotropy (∼20). Our result imposes significant constraints on possible models of triplet pairing in Sr2RuO4 and raises questions concerning the direction of the zero spin projection axis.

Original languageEnglish
Article number087003
JournalPhysical Review Letters
Issue number8
StatePublished - Aug 22 2013

ASJC Scopus subject areas

  • Physics and Astronomy (all)


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