Richard Kim, Yilong Luan, Zhe Fei, and Jigang Wang
https://www.osapublishing.org/abstract.cfm?URI=cleo_qels-2019-FM3D.7
We developed a terahertz scanning near-field nanoscope to visualize the spectral-temporal responses of antiferromagnetic modes in Sm0.4Er0.6FeO3. Our results demonstrate the first detection of collective spin precession at the femtosecond and nanometer scales.
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