Abstract
We analyze inelastic cotunneling through a strongly Coulomb‐blockaded quantum dot attached to two ferromagnetic leads in the weak coupling limit using a quantum Langevin equation approach, from which we derive a fully microscopic quantum based Bloch‐type equation to describe the cotunneling‐induced spin relaxation dynamics. Based on this, we then obtain explicit analytical expressions for the local magnetization, cotunneling current, and its fluctuations.
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