Physics – Condensed Matter – Superconductivity
Scientific paper
1997-09-23
Physics
Condensed Matter
Superconductivity
17 pages (RevTex), 8 Postscript figures
Scientific paper
A theoretical model for tunneling spectroscopy employing tight-binding band structure, d-wave gap symmetry, group velocity, and tunneling directionality can exhibit a wide range of characteristics similar to the ones found in tunneling experiments on high-Tc superconductors. Using a band structure obtained for optimally-doped Bi_2Sr_2CaCu_2O_8, the model tunneling density of states produces a good comparison to the point-contact tunneling conductance on the same material, especially in the gap region, displaying the same sub-gap shape and conductance peaks asymmetry.
Coffey L.
Yusof Zikri
Zasadzinski John F.
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