Theory of Scanning Tunneling Microscopy Probe of Impurity States in a-Wave Superconductor
- 26 August 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 77 (9), 1841-1844
- https://doi.org/10.1103/physrevlett.77.1841
Abstract
Scanning tunneling microscopy can provide a probe for the detailed study of quasiparticle states in high- superconductors. We propose that it can also be used to acquire specific information about impurity-induced quasiparticle states and the superconducting order-parameter structure. In particular, the local density of states is found to be sensitive to impurity-induced resonances and to the symmetry of the order parameter.
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