Superfluid Spin Transport in the Van der Waals Antiferromagnet CrCl3
Abstract
Over the past decade, the quest for spin superfluidity has moved to the forefront of spintronics, driven by the promise of phase-gradient-driven, ultra-low-loss spin transport. However, experimental investigations remain limited, primarily due to the lack of suitable material systems. Here, we report on the discovery and control of a superfluid spin transport in the easy-plane van der Waals antiferromagnetic (AFM) insulator CrCl3 by a nonlocal device structure. Combining nonlocal magnon transport measurements with theoretical modelling, we demonstrate that spin superfluidity emerges in CrCl3 under canted AFM spin configurations, where it gives rise to ultra-long range (around 90 μm), weakly decaying spin transport. We also provide direct evidence that strong magnetic fields and elevated temperatures suppress the superfluid state, restoring the rapid exponential decay with distance of incoherent magnons. These findings underscore the potential of spin superfluidity in two-dimensional magnetic insulators and establish CrCl3 as a promising platform for energy-efficient, long-distance spin transport in next-generation spintronic applications.
Related
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BibTeX
@misc{yuan2026superfluid,
title = {{Superfluid Spin Transport in the Van der Waals Antiferromagnet CrCl$_3$}},
author = {Peisen Yuan and Xiaomin Guo and Vincent Flynn and Benedetta Flebus and Fèlix Casanova and Luis E. Hueso},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.35513},
eprint = {2609.35513},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.35513},
}
RIS
TY - UNPB
TI - Superfluid Spin Transport in the Van der Waals Antiferromagnet CrCl_3
AU - Peisen Yuan
AU - Xiaomin Guo
AU - Vincent Flynn
AU - Benedetta Flebus
AU - Fèlix Casanova
AU - Luis E. Hueso
PY - 2026
DA - 2026/09/28
PB - arXiv
DO - 10.48550/arxiv.2609.35513
UR - https://arxiv.org/abs/2609.35513
AB - Over the past decade, the quest for spin superfluidity has moved to the forefront of spintronics, driven by the promise of phase-gradient-driven, ultra-low-loss spin transport. However, experimental investigations remain limited, primarily due to the lack of suitable material systems. Here, we report on the discovery and control of a superfluid spin transport in the easy-plane van der Waals antiferromagnetic (AFM) insulator CrCl_3 by a nonlocal device structure. Combining nonlocal magnon transport measurements with theoretical modelling, we demonstrate that spin superfluidity emerges in CrCl_3 under canted AFM spin configurations, where it gives rise to ultra-long range (around 90 μm), weakly decaying spin transport. We also provide direct evidence that strong magnetic fields and elevated temperatures suppress the superfluid state, restoring the rapid exponential decay with distance of incoherent magnons. These findings underscore the potential of spin superfluidity in two-dimensional magnetic insulators and establish CrCl_3 as a promising platform for energy-efficient, long-distance spin transport in next-generation spintronic applications.
ER -