Quantum Spin Tomography in Ferromagnet-Normal Conductors

Details Quantum Spin Tomography in Ferromagnet-Normal Conductors Quantum Spin Tomography in Ferromagnet-Normal Conductors

2010-02-12

arxiv.org/abs/1002.2499v1

Phys. Rev. B 81, 184422 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4+ pages

Scientific paper

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.

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