1999/10/31 by Kikuo Harigaya
Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Quantum and electron transport phenomena #Topological Materials and Phenomena #cond-mat #quant-ph
paper · pdf · doi:10.1088/0953-8984/12/31/308
published as J. Phys.: Condens. Matter 12 (2000) 7069-7076 · 11 pages
arxiv created 1999/12/08 · openalex publication_date 2000/07/18 · arxiv updated 2009/11/30 · openalex created_date 2017/10/20 · openalex updated_date 2026/07/30
The effects of the superconducting pair potential on the impurity scattering processes in metallic carbon nanotubes are studied theoretically. The backward scattering of electrons vanishes in the normal state. In the presence of superconducting pair correlations, the backward scatterings of electron- and hole-like quasiparticles vanish, too. The impurity gives rise to backward scatterings of holes for incident electrons, and it also induces backward scatterings of electrons for incident holes. Negative and positive currents induced by such scatterings between electrons and holes cancel each other. Therefore, the nonmagnetic impurity does not hinder the supercurrent in the regions where the superconducting proximity effects occur. Comparisons with experiment are discussed.