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Using first-principles density functional theory combined with nonequilibrium Green’s function method,we investigate the spin caloritronic transport properties of (2× 1) reconstructed zigzag MoS2 nanoribbons.These systems can exhibit obvious spin Seebeck effect.Furthermore,by tuning the extal magnetic field,a thermal giant magnetoresistance up to 104 % can be achieved.These spin caloritronic transport properties are understood in terms of spin-resolved transmission spectra,band structures,and the symmetry analyses of energy bands around the Fermi level.