Edge states and determination of pairing symmetry in superconducting Sr2RuO4

Details Edge states and determination of pairing symmetry in superconducting Sr2RuO4 Edge states and determination of pairing symmetry in superconducting Sr2RuO4

2001-06-11

arxiv.org/abs/cond-mat/0106198v4

Phys. Rev. B 65, 104504 (2002)

Physics

Condensed Matter

Superconductivity

6 pages, 6 figures. V.2: comparison with experiment added and discussion of horizontal nodes expanded. v.3: significant expans

Scientific paper

10.1103/PhysRevB.65.104504

We calculate the energy dispersion of the surface Andreev states and their contribution to tunneling conductance for the order parameters with horizontal and vertical lines of nodes proposed for superconducting Sr2RuO4. For vertical lines, we find double peaks in tunneling spectra reflecting the van Hove singularities in the density of surface states originating from the turning points in their energy dispersion. For horizontal lines, we find a single cusp-like peak at zero bias, which agrees very well with the experimental data on tunneling in Sr2RuO4.

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