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Spin and orbital transport in rare-earth dichalcogenides: The case of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow><mml:mi>EuS</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:math>
We perform first-principles calculations to determine the electronic, magnetic, and transport properties of rare-earth dichalcogenides, taking a monolayer of $H$-phase ${\mathrm{EuS}}_{2}$ as a representative. We predict that the $H$ phase of the ${\mathrm{EuS}}_{2}$ monolayer exhibits a half-metallic behavior upon doping with a very high magnetic moment. We find that the …