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Updated: Oct 25, 2026

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
Published on: January 21, 2016
Thermodynamic origin of the phonon Hall effect in a honeycomb antiferromagnet
Qingkai Meng1,2, Xiaokang Li1, Jie Liu1
1Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan, China.
Abstract:
The underlying mechanism of the thermal Hall effect generated by phonons in a variety of insulators is yet to be identified. In this work, we report on a sizable thermal Hall conductivity in nickel phosphorus trisulfide (NiPS3), a van der Waals stack of honeycomb layers with a zigzag antiferromagnetic order. The longitudinal (κaa) and the transverse (κab) thermal conductivities peak at the same temperature, and the thermal Hall angle, at this peak, respects a previously identified bound. The amplitude of κab is extremely sensitive to the amplitude of magnetization along the b axis but is not correlated with the phonon mean free path, which points to an intrinsic origin.
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