1999/12/10 by Michael E. Flatté, Michael E. Flatte, David E. Reynolds
Chemistry · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiparallel (mathematics) #Chemistry #Condensed matter physics #Degenerate energy levels #Impurity #Magnetic field #Magnetic impurity #Magnetic moment #Materials science #Physics #Physics of Superconductivity and Magnetism #Quantum tunnelling #Rare-earth and actinide compounds #Spectroscopy #Superconductivity #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.61.14810
8 pages, 4 figures
arxiv created 1999/12/10 · openalex publication_date 2000/06/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Qualitative differences in the spectrum of a superconductor near magnetic impurity pairs with moments aligned parallel and antiparallel are derived. A proposal is made for a nonmagnetic scanning tunneling spectroscopy of magnetic impurity interactions based on these differences. Near parallel impurity pairs the midgap localized spin-polarized states associated with each impurity hybridize and form bonding and antibonding molecular states with different energies. For antiparallel impurity moments the states do not hybridize; they are degenerate.