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.
Versions
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BibTeX
@misc{kravchuk2026nonlinear,
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},
howpublished = {arXiv},
year = {2026},
month = aug,
doi = {10.48550/arxiv.2605.22614},
eprint = {2605.22614},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2605.22614},
}
RIS
TY - UNPB
TI - Nonlinear Magnon Magnetic Moment Transport in Triangular-Lattice f-Wave Antialtermagnets
AU - Volodymyr P. Kravchuk
AU - Kostiantyn V. Yershov
AU - Bastián Pradenas
AU - Robin R. Neumann
AU - Rodrigo Jaeschke-Ubiergo
AU - Ricardo Zarzuela
AU - Jairo Sinova
AU - Jeroen van den Brink
AU - Alexander Mook
PY - 2026
DA - 2026/08/13
PB - arXiv
DO - 10.48550/arxiv.2605.22614
UR - https://arxiv.org/abs/2605.22614
AB - 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.
ER -