Spin Δ_T noise reverses to negative in N-sf-N-I-S junctions from spin-flip scattering and Andreev reflection, unlike always-positive charge Δ_T noise and quantum shot noises.
Reflec- tion probabilities for spin-up incident electron for no-flip and spin-flip are R↑↑ = |r↑↑|2 and R↑↓ = |r↑↓|2
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Negative Spin $\Delta_T$ noise Induced by Spin-Flip Scattering and Andreev Reflection
Spin Δ_T noise reverses to negative in N-sf-N-I-S junctions from spin-flip scattering and Andreev reflection, unlike always-positive charge Δ_T noise and quantum shot noises.