Spin-current shot noise as a probe of interactions in mesoscopic systems.

  title={Spin-current shot noise as a probe of interactions in mesoscopic systems.},
  author={Olivier Sauret and Denis Feinberg},
  journal={Physical review letters},
  volume={92 10},
It is shown that the spin-resolved current shot noise can probe attractive or repulsive interactions in mesoscopic systems. This is illustrated in two physical situations: (i) a normal-superconducting junction where the spin-current noise is found to be zero, and (ii) a single-electron transistor where the spin-current noise is found to be Poissonian. Repulsive interactions may also lead to weak attractive correlations (bunching of opposite spins) in conditions far from equilibrium. Spin… 

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