Unambiguous evidence for extended s-wave pairing symmetry in hole-doped high-temperature superconductors

Details Unambiguous evidence for extended s-wave pairing symmetry in hole-doped high-temperature superconductors Unambiguous evidence for extended s-wave pairing symmetry in hole-doped high-temperature superconductors

2003-05-21

arxiv.org/abs/cond-mat/0305483v4

Phil. Mag. B 84, 3861 (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures

Scientific paper

We have analyzed data from angle resolved photoemission spectroscopy, Fourier transform scanning tunnelling spectroscopy, and low-temperature thermal conductivity for optimally doped Bi_2Sr_2CaCu_2O_8+y in order to discriminate between d-wave and extended s-wave pairing symmetry. The combined data are inconsistent with d-wave symmetry, but quantitatively consistent with extended s-wave symmetry with eight line nodes. We also consistently explain all the phase-sensitive experiments.

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