Hyperbolic Spin Waves in Magnetic Polar Metals

Abhishek Kumar; Premala Chandra; Pavel A. Volkov

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arXiv · 2312.14377

Hyperbolic Spin Waves in Magnetic Polar Metals

Abhishek Kumar·Premala Chandra·Pavel A. Volkov

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Abstract

We demonstrate the emergence of collective spin modes with hyperbolic dispersion in three-dimensional spin-orbit coupled polar metals magnetized by intrinsic ordering or applied fields. These particle-hole bound states exist for arbitrarily weak repulsive interactions; they are optically accessible and can be used to generate pure spin current when magnetization is tilted away from the polar axis. We suggest material hosts for these excitations and discuss their potential relevance to nanoscale spintronic and polaritonic applications.

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Abhishek Kumar, Premala Chandra, Pavel A. Volkov. 2023-12-22. Hyperbolic Spin Waves in Magnetic Polar Metals. https://arxiv.org/abs/2312.14377

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