ÖPG-CMD Joint Meeting 2026

Dancing Magnets: Reconfigurable Spin Dynamics in Artificial Spin Lattices

Sep 24, 2026, 10:30 AM

30m

HS 10.11 (University of Graz)

4) Invited talk M42 - Advances in Magnonics Mini-Colloquium

Speaker

Benjamin Jungfleisch (TU Graz/ University of Delaware)

Description

Artificial spin systems composed of interacting nanomagnets provide a model platform to investigate collective phenomena in designed magnetic lattices. In these systems, magnetic microstates can be mapped onto effective spin-lattice models, enabling direct experimental access to frustration, degeneracy, and emergent behavior in complex energy landscapes [1].

Beyond their static properties, these systems host a rich spectrum of spin-wave excitations that are strongly determined by the underlying magnetic configuration and lattice geometry [2–5]. They therefore offer a unique opportunity to explore how interactions, symmetry, and microstate selection influence the dynamical response of correlated spin systems. In addition to the fundamental phenomena they exhibit, these systems are also promising for applications in reservoir computing and unconventional computing paradigms [6].

In this talk, I will demonstrate how the excitation spectrum of strongly interacting nanomagnetic arrays can be tailored through the interplay of material properties, lattice design, and reconfigurable magnetic states [7]. These results establish artificial spin systems as a versatile platform for studying and engineering collective excitations in complex magnetic matter.

References:
[1] J. Sklenar, S. Lendinez, and M. B. Jungfleisch, in Recent Advances in Topological Ferroics and Their Dynamics, edited by R. L. Stamps and H. Schultheiß, Vol. 70 (Academic Press, 2019), pp. 171–235.
[2] S. Lendinez, M. T. Kaffash, and M. B. Jungfleisch, Nano Lett. 21, 1921 (2021).
[3] S. Lendinez, M. T. Kaffash, O. G. Heinonen, S. Gliga, E. Iacocca, and M. B. Jungfleisch, Nat. Commun. 14, 3419 (2023).
[4] R. Sultana, M. T. Kaffash, G. Gubbiotti, Y. Ji, M. B. Jungfleisch, and F. Montoncello, ACS Appl. Electron. Mater. 8, 482 (2026).
[5] T. Dion, K. D. Stenning, A. Vanstone, H. H. Holder, R. Sultana, G. Alatteili, V. Martinez, M. T. Kaffash, T. Kimura, R. F. Oulton, W. R. Branford, H. Kurebayashi, E. Iacocca, M. B. Jungfleisch, and J. C. Gartside, Nat. Commun. 15, 4077 (2024).
[6] J. C. Gartside, K. D. Stenning, A. Vanstone, H. H. Holder, D. M. Arroo, T. Dion, F. Caravelli, H. Kurebayashi, and W. R. Branford, Nat. Nanotechnol. 17, 460 (2022).
[7] R. Sultana, A. K. Mondal, V. S. Bhat, K. Stenning, Y. Li, D. M. Arroo, A. Vasdev, M. R. McCarter, L. E. De Long, J. T. Hastings, J. C. Gartside, and M. B. Jungfleisch, J. Appl. Phys. 138, 061101 (2025).