Our joint theoretical and computer experimental study of heat-to-spin conversion reveals that noncollinear antiferromagnetic insulators are promising materials for generating magnon spin currents upon application of a temperature gradient: They exhibit spin Seebeck and spin Nernst effects. Using Kubo theory and spin dynamics simulations, we explicitly evaluate these effects in a single kagome sheet of potassium iron jarosite, KFe₃(OH)₆(SO₄)₂, and predict a spin Seebeck conversion factor of 0.23.33333pt0exμV/K at a temperature of 203.33333pt0exK.
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Mook et al. (2019) studied this question.
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