Quantum Spin Tomography in Ferromagnet-Normal Conductors
arXiv:1002.2499 · doi:10.1103/PhysRevB.81.184422
Abstract
We present a theory for a complete reconstruction of non-local spin correlations in ferromagnet-normal conductors. This quantum spin tomography is based on cross correlation measurements of electric currents into ferromagnetic terminals with controllable magnetization directions. For normal injectors, non-local spin correlations are universal and strong. The correlations are suppressed by spin-flip scattering and, for ferromagnetic injectors, by increasing injector polarization.
4+ pages
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