Kondo impurity at the edge of a superconducting wire
Parameshwar R. Pasnoori, Colin Rylands, Natan Andrei
Abstract
When magnetic impurities are coupled to a superconducting medium mean field theory indicates that a phase transition occurs from a local moment to a screened phase concurrent with the appearance of bound states which form at the impurity site. This paper offers a full quantum treatment which shows that for a superconducting quantum wire a quantum phase transition takes place while at the same time the enhanced quantum fluctuations of the bulk and impurity destroy these bound states.
Topics & Concepts
Condensed matter physicsImpuritySuperconductivityKondo effectMagnetic impurityQuantum phase transitionPhysicsQuantumQuantum wirePhase (matter)Bound stateAnderson impurity modelMagnetic fieldQuantum phasesEnhanced Data Rates for GSM EvolutionMagnetic momentQuantum dotField (mathematics)Quantum fluctuationQuantum critical pointPhase transitionKondo modelQuantum mechanicsQuantum point contactKondo insulatorCritical fieldQuantum and electron transport phenomenaPhysics of Superconductivity and MagnetismRare-earth and actinide compounds