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Ultrahigh spin thermopower and pure spin current in a single-molecule magnet.


ABSTRACT: Using the non-equilibrium Green's function (NEGF) formalism within the sequential regime, we studied ultrahigh spin thermopower and pure spin current in single-molecule magnet(SMM), which is attached to nonmagnetic metal wires with spin bias and angle (θ) between the easy axis of SMM and the spin orientation in the electrodes. A pure spin current can be generated by tuning the gate voltage and temperature difference with finite spin bias and the arbitrary angle except of θ=1/2π, 2/3π. In the linear regime, large thermopower can be obtained by modifying V(g) and the angles (θ). These results are useful in fabricating and advantaging SMM devices based on spin caloritronics.

SUBMITTER: Luo B 

PROVIDER: S-EPMC3928577 | biostudies-other | 2014

REPOSITORIES: biostudies-other

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