Events

17. March 2026, 16:00 until 17:00

Huixin Guo, Institute of Applied Physics, TU Wien

Seminar

Engineering 3D Magnetic Nanostructures for High-Frequency Spin Dynamics and On-Chip Integration

Three-dimensional (3D) magnetic architectures are an emerging platform that enables access to new spin textures and novel functionalities, while offering routes toward higher integration density in spin-based devices[1,2]. A versatile and scalable 3D nanofabrication approach combining two-photon lithography (TPL) and atomic layer deposition (ALD) is recently realized[3]. Rich spin-wave spectra featuring distinct bulk and surface magnon modes extending up to 25 GHz has been found on 3D ferromagnetic Ni nanonetworks with a woodpile unit cell. Systematic studies demonstrate how lattice period and finite size (unit-cell number) reshape the mode landscape. Functional integration onto coplanar waveguides (CPWs) enables direct excitation and electrical readout of coherent spin-wave dynamics in these 3D architectures[4]. Micromagnetic simulations are employed to identify the microscopic character of the observed modes. Finally, initial trials of magnetotransport measurements in 3D Ni nanonetworks, demonstrating their integration into electronic circuits for potential real-world device.

This work was supported by the SNSF via grant number 197360.

1. A. Fernández-Pacheco, R. Streubel, O. Fruchart, et al. Nat Commun 8 (2017).
2. G. Gubbiotti, et al. J. Phys.: Condens. Matter 37 (2025)
3. H. Guo, A. J. M. Deenen, M. Xu, M. Hamdi, D. Grundler, Adv. Mater. 35 (2023).
4. H. Guo, K. Lenz, M. Gołębiewski, et al. Small 22, (2026).

Calendar entry
Event location
SEM.R. DB gelb 05 B
1040 Wien
Wiedner Hauptstraße 8-10/E134
Organiser
IAP
Manuela Marik
marik@iap.tuwien.ac.at
Public
Yes
Entrance fee
No
Registration required
No