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

Дата и время публикации : 1993-06-22T20:38:29Z

Авторы публикации и институты :
J. M. Byers
M. E. Flatte’
D. J. Scalapino

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 12 pages (revtex) + 3 figures (included – postscript), NSF-ITP-93-81
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: 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-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 an STM measurement on the surface of a high-temperature superconductor.

Category: Physics