Abstract
We study the thermospin effects in a system consisting of a quantum dot coupled to ferromagnetic leads. It is shown that sign reversal and oscillation of spin Seebeck coefficient are indicated as a function of device parameters. When the magnetizations of the leads are formed in parallel alignment, the spin Seebeck coefficient and the spin-FOM have their maximum values for the symmetric dot-lead coupling case. However, in the antiparallel case, the optimal device parameters depend mainly on the strength of the magnetic field.
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