Phys. Rev. Lett. 74, 3451–3454 (1995)Theory of Tunneling Spectroscopy of d-Wave SuperconductorsReceived 24 June 1994; published in the issue dated 24 April 1995 A tunneling theory for a normal metal–insulator– d-wave superconductor junction is presented. In contrast to the s-wave superconductor, the tunneling conductance spectra strongly depend on the tunneling direction relative to the crystalline axes, and do not always represent the bulk density of states. Zero-bias conductance peaks are expected in ab-plane tunneling. The present theory systematically explains various experimental results in the tunneling spectroscopy of high- Tc superconductors. © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.74.3451
DOI:
10.1103/PhysRevLett.74.3451
PACS:
74.50.+r, 74.72.-h, 74.80.Fp
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