Nonlinear Meissner effect in CuO superconductors

S. K. Yip*, J. A. Sauls

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

254 Scopus citations

Abstract

Recent theories of the NMR in the CuO superconductors are based on a spin-singlet dx2-y2 order parameter. Since this state has nodal lines on the Fermi surface, nonlinear effects associated with low-energy quasiparticles become important, particularly at low temperatures. We show that the field dependence of the supercurrent, below the nucleation field for vortices, can be used to locate the positions of the nodal lines of an unconventional gap in momentum space, and hence test the proposed dx2-y2 state.

Original languageEnglish (US)
Pages (from-to)2264-2267
Number of pages4
JournalPhysical review letters
Volume69
Issue number15
DOIs
StatePublished - 1992

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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