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Influence of gap extrema on the tunneling conductance near an impurity in an anisotropic superconductor
Journal article   Open access   Peer reviewed

Influence of gap extrema on the tunneling conductance near an impurity in an anisotropic superconductor

J. M Byers, M. E Flatte and D. J Scalapino
Physical review letters, Vol.71(20), pp.3363-3366
11/15/1993
DOI: 10.1103/PhysRevLett.71.3363
PMID: 10054954
url
https://arxiv.org/pdf/cond-mat/9306048View
Open Access

Abstract

We examine the effect of an impurity on the nearby tunneling conductance in an anisotropically gapped superconductor. The variation of the conductance has pronounced spatial dependence which depends strongly on the Fermi surface location of gap extrema. In particular, different gap symmetries produce profoundly different spatial features in the conductance. These effects may be detectable with a scanning-tunneling-microscope study of the surface of a high-temperature superconductor. © 1993 The American Physical Society.
Physics Superconductivity Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Proximity effects, weak links, tunneling phenomena, and Josephson effects Proximity effects, weak links, tunneling phenomena, and josephson effects, adreev effect, sn and sns junctions

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