1999/10/14 by Andrew Martin, Andrew M. Martin, James F. Annett +2
Engineering · Physics and Astronomy · #FOS: Physical sciences #Physics of Superconductivity and Magnetism #Superconducting Materials and Applications #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/9910208
8 pages, 12 figures (Latex)
arxiv created 1999/10/14 · openalex publication_date 1999/10/14 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We consider a model (100) interface between two d-wave superconductors. By solving the Bogoliubov de Gennes equation on a tight binding lattice, we study the properties of the interface as a function of the interface barrier. We contrast the two scenarios: (i) an order parameter phase difference of θ=0 across the interface, and (ii) a phase slip of θ=π across the interface. We find resonant sub-gap structure in the density of states only when there is a phase slip present. We show that the local s-wave and ``p-wave like'' order parameter components are strongly influenced by the barrier profile and by the phase slip. The temperature dependence of the local p-wave order parameter follows the underlying bulk Tc for p-wave superconductivity implying that this could be measured by a suitable tunneling experiment. We also calculate the Josephson critical current as a function of the strength of the insulating barrier at the interface.