Simulations of a two-orbital Hubbard model show that NiO's Néel vector changes length rather than rotating under ultrafast laser drive, and that proximity spin-orbit coupling, not an interfacial spin current, explains the observed terahertz emission.
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Nonclassical dynamics of N\'eel vector and magnetization accompanied by THz and high-harmonic radiation from ultrafast-light-driven NiO antiferromagnet insulator
Simulations of a two-orbital Hubbard model show that NiO's Néel vector changes length rather than rotating under ultrafast laser drive, and that proximity spin-orbit coupling, not an interfacial spin current, explains the observed terahertz emission.