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arXiv · 2608.29712

High-Field Terahertz Spin Resonance in Cr$_2$O$_3$ above the Spin-Flop Transition

Kaiyang Huang·Yuto Kinoshita·Natsuki Kanda·Takuya Matsuda·Masashi Tokunaga·Ryusuke Matsunaga·Yasuhiro H. Matsuda
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Abstract

We report single-shot terahertz time-domain spectroscopy of Cr$_2$O$_3$ in pulsed magnetic fields up to 30 T. Well above the spin-flop field, in the 20-30 T range, the resonance frequency exhibits a nearly linear field dependence with a slope of ~22 GHz/T, smaller than the 28 GHz/T reported from low-field measurements. This reduction is insensitive to temperature and to a 15{\deg} field tilt, suggesting an intrinsic high-field property.

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Kaiyang Huang, Yuto Kinoshita, Natsuki Kanda, Takuya Matsuda, Masashi Tokunaga, Ryusuke Matsunaga, Yasuhiro H. Matsuda. 2026-08-30. High-Field Terahertz Spin Resonance in Cr$_2$O$_3$ above the Spin-Flop Transition. https://doi.org/10.7566/jpsj.95.075001

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