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

Abstract

We have analysed data from angle-resolved photo-emission spectroscopy, Fourier transform scanning tunneling spectroscopy, and low-temperature thermal conductivity for optimally doped Bi₂Sr₂CaCu₂ O _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 explain all phase-sensitive experiments in a consistent manner.

Notes

Email: [email protected].

Additional information

Notes on contributors

Guo-meng Zhao †

Email: [email protected].