1999/11/23 by Yukihiro Okuno, Yikihiro Okuno
Physics and Astronomy · #Advanced Condensed Matter Physics #Atomic and Subatomic Physics Research #Condensed matter physics #Current (fluid) #Energy (signal processing) #Impurity #Magnetic impurity #Phase (matter) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Superconductivity #Symmetry (geometry) #T-symmetry #Zero (linguistics) #cond-mat.supr-con
paper · pdf · doi:10.1143/jpsj.69.858
18 pages
arxiv created 1999/11/23 · openalex publication_date 2000/03/15 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the impurity effect in the time reversal symmetry (\cal T) breaking superconductor based on the Bogoliubov-de Gennes (BdG) equations. In \cal T-violating superconductors, spontaneous currents are induced around the impurity. The current patterns around the impurity reflect the structures of the Cooper pairs. We investigate impurity problem numerically for two kinds of \cal T violating superconductors (px± \rm ipy and d+\rm is) and investigate the currents around the impurity. We also study the effects of the magnetic impurity in p-wave (px± \rm ipy) superconductor, especially in view of the zero-energy crossing of energy levels related to the phase transition of the ground state.