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Using the Bogoliubov de-Gennes formalism, we investigate the charge andspin-dependent thermoelectric effects in superconductor graphene junctions.Results demonstrate that despite normal-superconductor junctions, there is atemperature-dependent spin thermopower both in the graphene-basedferromagnetic-superconductor (F-S) and ferromagnetic-Rashba spin-orbitregion-superconductor (F-RSO-S) junctions. It is also shown that in thepresence of Rashba spin-orbit interaction, the charge and spin-dependentSeebeck coefficients can reach to their maximum up to 3.5$k_B/e$ and2.5$k_B/e$, respectively. Remarkably, these coefficients have a zero-pointcritical value with respect to magnetic exchange field and chemical potential.This effect disappears when the Rashba coupling is absent. These resultssuggest that graphene-based superconductors can be used in spin-caloritronicsdevices.

Spin-dependent thermoelectric effects in graphene based superconductor junctions