First-principles calculations predict hexagonal NiS is a compensated altermagnetic semimetal whose Dirac-like crossings produce large spin and anomalous Hall conductivities and ~1700% magnetoresistance at 30 T.
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Dirac topology, anomalous Hall response, and giant magnetoresistance in carrier-compensated altermagnetic semimetal NiS
First-principles calculations predict hexagonal NiS is a compensated altermagnetic semimetal whose Dirac-like crossings produce large spin and anomalous Hall conductivities and ~1700% magnetoresistance at 30 T.