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arXiv · 2309.03382

Vector spin Seebeck effect and spin swapping effect in antiferromagnetic insulators with non-collinear spin structure

Jinsong Xu·Weiwei Lin·Jiaming He·J. -S. Zhou·Danru Qu·Ssu-Yen Huang·C. L. Chien
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Abstract

Antiferromagnets (AFs) are prospective for next-generation high-density and high-speed spintronic applications due to their negligible stray field and ultrafast spin dynamics, notwithstanding the challenges in detecting and manipulating AF order with no magnetization (M = 0). Among the AFs, non-collinear AFs are of particular interest because of their unique properties arising from the non-collinear spin structure and the small magnetization M. In this work, we describe the recently observed vector spin Seebeck effect in non-collinear LuFeO$_3$, where the magneto-thermovoltage under an in-plane temperature gradient, not previously observed, is consistent with the predicted spin swapping effect. Our results shed light on the importance of the non-collinear spin structure in the emerging spin phenomena in non-collinear AFs and offer a new class of materials for AF spintronics and spin caloritronics.

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Jinsong Xu, Weiwei Lin, Jiaming He, J. -S. Zhou, Danru Qu, Ssu-Yen Huang, C. L. Chien. 2023-09-06. Vector spin Seebeck effect and spin swapping effect in antiferromagnetic insulators with non-collinear spin structure. https://doi.org/10.1063/5.0156379

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