Spin-dependent thermoelectric effects in graphene based superconductor junctions
arXiv:1612.01461 · doi:10.1063/1.4976005
Abstract
Using the Bogoliubov de-Gennes formalism, we investigate the charge and spin-dependent thermoelectric effects in superconductor graphene junctions. Results demonstrate that despite normal-superconductor junctions, there is a temperature-dependent spin thermopower both in the graphene-based ferromagnetic-superconductor (F-S) and ferromagnetic-Rashba spin-orbit region-superconductor (F-RSO-S) junctions. It is also shown that in the presence of Rashba spin-orbit interaction, the charge and spin-dependent Seebeck coefficients can reach to their maximum up to 3.5 and 2.5, respectively. Remarkably, these coefficients have a zero-point critical value with respect to magnetic exchange field and chemical potential. This effect disappears when the Rashba coupling is absent. These results suggest that graphene-based superconductors can be used in spin-caloritronics devices.
10 pages, 9 figures
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Cited by in corpus (5)
- Thermoelectric properties of a ferromagnet-superconductor hybrid junction: Role of interfacial Rashba spin-orbit interaction
- On-demand thermoelectric generation of equal-spin Cooper pairs
- Thermoelectric processes of quantum normal-superconductor interfaces
- Thermoelectric properties of inversion symmetry broken Weyl semimetal-Weyl superconductor hybrid junctions
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