2002/05/15 by Dirk K. Morr, Nikolaos A. Stavropoulos
Chemistry · Physics and Astronomy · #Bound state #Chemistry #Condensed matter physics #Impurity #Interference (communication) #Physics #Physics of Superconductivity and Magnetism #Polarization (electrochemistry) #Quantum #Quantum and electron transport phenomena #Quantum interference #Quantum mechanics #Semiconductor Quantum Structures and Devices #Spin (aerodynamics) #Spins #Superconductivity #Telecommunications #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.67.020502
4 pages, 4 figures
arxiv created 2002/05/15 · openalex publication_date 2003/01/13 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We demonstrate that quantum interference of electronic waves that are scattered by multiple magnetic impurities in an s-wave superconductor gives rise to novel bound states. Specifically, we predict that by varying the interimpurity distance or the relative angle between two impurity spins, the states' quantum numbers, as well as their distinct frequency and spatial dependencies, can be altered. Finally, we show that the superconductor can be driven through multiple quantum phase transitions in which its total spin 〈sz〉 changes between 〈sz〉=0, 1/2, and 1.