Nonlinear Magnon Magnetic Moment Transport in Triangular-Lattice f-Wave Antialtermagnets
Abstract
We study the spin excitations in the frustrated coplanar 120-degree ground state of the triangular-lattice Heisenberg antiferromagnet and demonstrate that they carry a magnetic moment perpendicular to the plane in which the spins order, despite the ground-state sublattice moments having no out-of-plane component. The symmetry of the momentum dependence of the magnetic moment and energy of the magnons renders the system an odd-parity f-wave magnet. Extending this model to a stack of antiferromagnetically coupled triangular layers provides a realization of magnons in a three-dimensional f-wave antialtermagnet. We show that nonlinear thermal transport effects of magnons, such as Edelstein and spin-splitter effects, provide clear experimental signatures of magnons in f-wave antialtermagnets.
Keywords
Cite
@article{arxiv.2605.22614,
title = {Nonlinear Magnon Magnetic Moment Transport in Triangular-Lattice f-Wave Antialtermagnets},
author = {Volodymyr P. Kravchuk and Kostiantyn V. Yershov and Bastián Pradenas and Robin R. Neumann and Rodrigo Jaeschke-Ubiergo and Ricardo Zarzuela and Jairo Sinova and Jeroen van den Brink and Alexander Mook},
journal= {arXiv preprint arXiv:2605.22614},
year = {2026}
}
Comments
12 pages, 7 figures