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arXiv · 1706.03978

Signature of magnon Nernst effect in an antiferromagnetic insulator

Y. Shiomi·R. Takashima·E. Saitoh
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Abstract

A magnon Nernst effect, an antiferromagnetic analogue of the magnon Hall effect in ferromagnetic insulators, has been studied experimentally for a layered antiferromagnetic insulator MnPS3 in contact with two Pt strips. Thermoelectric voltage in the Pt strips grown on MnPS3 single crystals exhibits non-monotonic temperature dependence at low temperatures, which cannot be explained by electronic origins in Pt but can be ascribed to the inverse spin Hall voltage induced by a magnon Nernst effect. Control of antiferromagnetic domains in the MnPS3 crystal by magnetoelectric cooling is found to modulate the low-temperature thermoelectric voltage in Pt, which corroborates the emergence of the magnon Nernst effect in Pt|MnPS3 hybrid structures.

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Y. Shiomi, R. Takashima, E. Saitoh. 2017-06-13. Signature of magnon Nernst effect in an antiferromagnetic insulator. https://doi.org/10.1103/physrevb.96.134425

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