Influence of Gap Extrema on the Tunneling Conductance Near an Impurity in an Anisotropic Superconductor

J. M. Byers, M. E. Flatte', D. J. Scalapino

Changes: figures added in postscript form, Eq. (7) and various typos corrected. We examine the effect of an impurity on the nearby tunneling conductance in an anisotropically-gappe…