Nonreciprocal Magnon Hanle Effect in Antiferromagnetic α-Fe2O3
Abstract
The precession of the magnon pseudospin about the equilibrium pseudofield, the latter capturing the nature of magnonic eigenexcitations in an antiferromagnet, gives rise to the magnon Hanle effect. Its realization via electrically injected and detected spin transport in an antiferromagnetic insulator demonstrates its high potential for devices and as a convenient probe for magnon eigenmodes and the underlying spin interactions in the antiferromagnet. Here, we observe a non-reciprocity in the Hanle signal measured in alpha-Fe2O3 using two spatially separated Pt electrodes as spin injector and detector. Interchanging their roles alters the detected magnon spin signal. The recorded difference depends on the applied magnetic field and reverses sign when the signal passes its nominal maximum at the so-called compensation field. Our findings unlock the high potential of antiferromagnetic magnonics towards the realization of electronics-inspired phenomena.
Versions
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BibTeX
@misc{guckelhorn2026nonreciprocal,
title = {{Nonreciprocal Magnon Hanle Effect in Antiferromagnetic $α$-Fe$_2$O$_3$}},
author = {Janine Gückelhorn and Sebastián de-la-Peña and Monika Scheufele and Matthias Grammer and Matthias Opel and Stephan Geprägs and Juan Carlos Cuevas and Rudolf Gross and Hans Huebl and Akashdeep Kamra and Matthias Althammer},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.02631},
eprint = {2609.02631},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.02631},
}
RIS
TY - UNPB
TI - Nonreciprocal Magnon Hanle Effect in Antiferromagnetic α-Fe_2O_3
AU - Janine Gückelhorn
AU - Sebastián de-la-Peña
AU - Monika Scheufele
AU - Matthias Grammer
AU - Matthias Opel
AU - Stephan Geprägs
AU - Juan Carlos Cuevas
AU - Rudolf Gross
AU - Hans Huebl
AU - Akashdeep Kamra
AU - Matthias Althammer
PY - 2026
DA - 2026/09/02
PB - arXiv
DO - 10.48550/arxiv.2609.02631
UR - https://arxiv.org/abs/2609.02631
AB - The precession of the magnon pseudospin about the equilibrium pseudofield, the latter capturing the nature of magnonic eigenexcitations in an antiferromagnet, gives rise to the magnon Hanle effect. Its realization via electrically injected and detected spin transport in an antiferromagnetic insulator demonstrates its high potential for devices and as a convenient probe for magnon eigenmodes and the underlying spin interactions in the antiferromagnet. Here, we observe a non-reciprocity in the Hanle signal measured in alpha-Fe2O3 using two spatially separated Pt electrodes as spin injector and detector. Interchanging their roles alters the detected magnon spin signal. The recorded difference depends on the applied magnetic field and reverses sign when the signal passes its nominal maximum at the so-called compensation field. Our findings unlock the high potential of antiferromagnetic magnonics towards the realization of electronics-inspired phenomena.
ER -