Rectification of the spin Seebeck current in noncollinear antiferromagnets
Mesoscale and Nanoscale Physics
2022-08-10 v1
Abstract
In the absence of an external magnetic field and a spin-polarized charge current, an antiferromagnetic system supports two degenerate magnon modes. An applied thermal bias activates the magnetic dynamics, leading to a magnon flow from the hot to the cold edge (magnonic spin Seebeck current). Both degenerate bands contribute to the magnon current but the orientations of the magnetic moments underlying the magnons are opposite in different bands. Therefore, while the magnon current is nonzero, the net spin current is zero.
Cite
@article{arxiv.2207.12890,
title = {Rectification of the spin Seebeck current in noncollinear antiferromagnets},
author = {L. Chotorlishvili and Xi-guang Wang and A. Dyrdal and Guang-hua Guo and V. K. Dugaev and J. Barnas and J. Berakdar},
journal= {arXiv preprint arXiv:2207.12890},
year = {2022}
}
Comments
Phys. Rev. B 106, 014417 (2022)