Nonequilibrium spin-current detection with a single Kondo impurity

  title={Nonequilibrium spin-current detection with a single Kondo impurity},
  author={Jong Soo Lim and Rosa L{\'o}pez and Laurent Limot and Pascal Simon},
  journal={Physical Review B},
We present a theoretical study based on the Anderson model of the transport properties of a Kondo impurity (atom or quantum dot) connected to ferromagnetic leads, which can sustain a nonequilibrium spin current. We analyze the case where the spin current is injected by an external source and when it is generated by the voltage bias. Due to the presence of ferromagnetic contacts, a static exchange field is produced that eventually destroys the Kondo correlations. We find that such a field can be… 
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