Direct ARPES evidence of robust topological surface states from Dirac nodal lines in Eu(Ga,Al)4 magnets, coupled to helical antiferromagnetic order, confirms dual real-space and momentum-space topology.
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Robust topological surface states in skyrmion-host magnets Eu(Ga,Al)4: evidence for dual topology
Direct ARPES evidence of robust topological surface states from Dirac nodal lines in Eu(Ga,Al)4 magnets, coupled to helical antiferromagnetic order, confirms dual real-space and momentum-space topology.