Integrating spin glass dynamics into nanomechanical resonators
Abstract
Spin glasses are non-equilibrium magnetic systems with pronounced slow relaxation, ageing, and chaotic, synaptic-like properties, whose unique history-dependent dynamics have remained difficult to harness in functional devices. Two-dimensional van der Waals spin-glass magnets offer a route to overcome this limitation by allowing controlled coupling between magnetic and mechanical degrees of freedom. Here, we demonstrate the integration of a spin-glass functionality in nanoelectromechanical systems (NEMS) using thin exfoliated NbFeTe2 films, which establishes a robust spin-glass state down to a few tens of nanometer-thick layers. Using cryogenic magnetic force microscopy, we reveal characteristic slow, hour-scale macroscopic magnetic relaxation, associated with glassy reorganisation of its magnetic domain clusters. Incorporation of thin NbFeTe2 into membrane resonators allows the transduction of this glassy magnetic domain relaxation into strain, shifting their mechanical resonance frequency. This provides a functional nanomechanical readout of spin-glass dynamics and establishes a versatile platform for integrating frustrated magnetism into NEMS.
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BibTeX
@misc{grebenchuk2026integrating,
title = {{Integrating spin glass dynamics into nanomechanical resonators}},
author = {S. Y. Grebenchuk and T. M. Savilov and Y. W. Ho and A. K. Grebenko and M. Kravtsov and J. M. Wolf and D. A. Litvinov and Z. Yang and P. Cai and S. Ramachandran and R. Duan and L. Zheng and B. Özyilmaz and G. Eda and E. J. G. Santos and M. Koperski and K. S. Novoselov and M. Šiškins},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.03891},
eprint = {2610.03891},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.03891},
}
RIS
TY - UNPB
TI - Integrating spin glass dynamics into nanomechanical resonators
AU - S. Y. Grebenchuk
AU - T. M. Savilov
AU - Y. W. Ho
AU - A. K. Grebenko
AU - M. Kravtsov
AU - J. M. Wolf
AU - D. A. Litvinov
AU - Z. Yang
AU - P. Cai
AU - S. Ramachandran
AU - R. Duan
AU - L. Zheng
AU - B. Özyilmaz
AU - G. Eda
AU - E. J. G. Santos
AU - M. Koperski
AU - K. S. Novoselov
AU - M. Šiškins
PY - 2026
DA - 2026/10/02
PB - arXiv
DO - 10.48550/arxiv.2610.03891
UR - https://arxiv.org/abs/2610.03891
AB - Spin glasses are non-equilibrium magnetic systems with pronounced slow relaxation, ageing, and chaotic, synaptic-like properties, whose unique history-dependent dynamics have remained difficult to harness in functional devices. Two-dimensional van der Waals spin-glass magnets offer a route to overcome this limitation by allowing controlled coupling between magnetic and mechanical degrees of freedom. Here, we demonstrate the integration of a spin-glass functionality in nanoelectromechanical systems (NEMS) using thin exfoliated NbFeTe_2 films, which establishes a robust spin-glass state down to a few tens of nanometer-thick layers. Using cryogenic magnetic force microscopy, we reveal characteristic slow, hour-scale macroscopic magnetic relaxation, associated with glassy reorganisation of its magnetic domain clusters. Incorporation of thin NbFeTe_2 into membrane resonators allows the transduction of this glassy magnetic domain relaxation into strain, shifting their mechanical resonance frequency. This provides a functional nanomechanical readout of spin-glass dynamics and establishes a versatile platform for integrating frustrated magnetism into NEMS.
ER -