Zn impurity induced moments and tunneling conductance asymmetry in cuprate superconductors

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

The effects of a non-magnetic Zn impurity substituting an in-plane Cu are studied by solving the Bogoliubov-de Gennes equation self-consistently which is derived from the \ttju Hamiltonian with all the allowed order parameters included. The Zn impurity, modeled in terms of a potential scatterer in unitary limit, induces local staggered magnetic moments around itself, and the calculated NMR shifts from the induced moments are in agreement with the experimental Cu NMR spectra. We also note that the experimentally observed negative slope of the tunneling conductance can result from the next-nearest hopping $t'$.
10 pages including 3 figures, submitted to Phys. Rev. B

Keywords

Superconductivity, Strongly Correlated Electrons

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/18684

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0112332
 http://arxiv.org/abs/cond-mat/0112332

Collections

arXiv