By decomposing the spin Hall conductivity of RuO2 into time-reversal-odd and time-reversal-even parts, the authors find the nonrelativistic spin current is polarized nearly along the Néel vector.
Here, current is along the [010] crystallographic direction, and the current direction was defined as x, and the normal direction as z
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Unveiling the nonrelativistic spin current polarization in an altermagnet
By decomposing the spin Hall conductivity of RuO2 into time-reversal-odd and time-reversal-even parts, the authors find the nonrelativistic spin current is polarized nearly along the Néel vector.