Time-resolved X-ray measurements show the Néel vector of TmFeO3 rotates from the c-axis to the a-axis, nearly 90 degrees, within about 20 ps after optical excitation.
Mechanism of N´ eel order switching in antiferromagnetic thin films revealed by magnetotransport and direct imaging,
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X-ray View of Light-Induced Spin Reorientation in TmFeO$_{3}$: Direct Observation of a 90$^\circ$ N\'eel Vector Rotation
Time-resolved X-ray measurements show the Néel vector of TmFeO3 rotates from the c-axis to the a-axis, nearly 90 degrees, within about 20 ps after optical excitation.