Symmetry of the Gap in Bi2212 from Photoemission Spectroscopy

Details Symmetry of the Gap in Bi2212 from Photoemission Spectroscopy Symmetry of the Gap in Bi2212 from Photoemission Spectroscopy

1993-11-17

arxiv.org/abs/cond-mat/9311043v1

Phys Rev Lett 73, 3044 (1994)

Physics

Condensed Matter

3 pages (Plain TeX with macros), plus 1 postscript figure

Scientific paper

10.1103/PhysRevLett.73.3044

In a recent Letter, Shen et al have detected a large anisotropy of the superconducting gap in Bi2212, consistent with d-wave symmetry, from photoemission spectroscopy. Moreover, they claim that the change in their spectra as a function of aging is also consistent with such an intrepretation. In this Comment, I show that the latter statement is not entirely correct, in that the data as a function of aging are inconsistent with a d-wave gap but are consistent with an anisotropic s-wave gap.

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