LAUSR

Abstract We propose a perfect spin-caloritronics device based on a carbon-based organic chain. A spin-semiconducting property is achieved, which originates from the edge localized states. The appearance of spin-dependent transport gaps results in a large spin Seebeck coefficient. Moveover, the dimensionless spin thermoelectric figure of merit (FOM) at room temperature can be enhanced to as high as 35. Furthermore, the pure spin current or single-spin current can be produced at some chemical potentials under a temperature difference, and their transport directions can also be tuned by the chemical potential. Therefore, the carbon-based organic chain is well suited for designing the multifunctional spin-caloritronics devices.