Symmetry-Enforced Nodal $f$-Wave Magnets
Abstract
Owing to their relevance for spintronics, electronic band splitting and spin-polarization textures in magnets are active areas of research. In non-collinear magnets, alternating spin textures can arise both for isolated bands and for intersecting band pairs with nodal splitting. This raises the question of whether -wave magnets should be defined by their spin polarization or their band splitting. To resolve this ambiguity, we introduce spin-space symmetries that couple the spin polarization and splitting textures for all bands. Focusing on the nodal -wave magnet, we construct a tight-binding model of itinerant electrons on a honeycomb bilayer coupled to a non-collinear magnetic texture. Analytic expressions for spin polarization and splitting reveal the dependence on hopping and exchange coupling. We predict a canting-induced spin conductivity arising from the nodal structure of the splitting. Furthermore, the -wave magnet in the bulk can induce -wave magnetism on the surface. This surface -wave character leads to a bulk-forbidden Edelstein effect with -wave anisotropy.
Keywords
Cite
@article{arxiv.2603.17406,
title = {Symmetry-Enforced Nodal $f$-Wave Magnets},
author = {Moritz M. Hirschmann and Akira Furusaki and Max Hirschberger},
journal= {arXiv preprint arXiv:2603.17406},
year = {2026}
}
Comments
8 pages, 5 figures