Impurity Effects on Quasiparticlec-Axis Planar Tunneling and STM Spectra in High-Cuprates
- 18 May 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 80 (20) , 4546-4549
- https://doi.org/10.1103/physrevlett.80.4546
Abstract
We present self-consistent calculations of the electronic structure near strongly scattering impurities in cuprate superconductors described by a realistic band structure and order parameter magnitude. Energies and highly asymmetric line shapes of resonances, changes in gap-edge features, and local changes in the order parameter are determined for magnetic and nonmagnetic potentials. Experimental tunneling spectra are well fitted by calculations using a d-wave order parameter. The local density of states near such impurities is also calculated.Keywords
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