Three-dimensional nanoscale control of magnetism in crystalline Yttrium Iron Garnet
arXiv:2409.17722 · doi:10.1038/s41467-025-64630-5
Abstract
The exceptional magnetic, optical and phononic properties of Yttrium Iron Garnet (YIG) make it unique for spin-wave based and photonic applications. Yet, nanostructuring crystalline YIG and manipulating its magnetism in a non-destructive way is an outstanding challenge, and so far mostly limited to two-dimensional capabilities. Here, we show that irradiation of single-crystal YIG films with a focused UV laser drives a stable, giant enhancement of the perpendicular magnetic anisotropy, preserving the crystalline quality. This modulation is highly confined at the nanoscale in both the lateral and vertical directions, and its extension within the volume can be finely tuned with a continuous depth-control. By harnessing these three-dimensional anisotropy profiles, we demonstrate a large tuning of the spin-wave band structure, volume spatial localization, and non-reciprocity, realizing proof-of-principle 3D magnonic crystals. This straightforward, single-step, laser nanofabrication of three-dimensional magnetic systems based on crystalline YIG thin films opens the way to design novel functions in magnonic and magneto-optic devices.
arXiv comment20 pages, 5 figures
References in corpus (22)
- The design and verification of Mumax3
- Hybrid quantum systems based on magnonics
- Roadmap on Spin-Wave Computing
- Hybrid magnonics: physics, circuits and applications for coherent information processing
- Two-photon Lithography for 3D Magnetic Nanostructure Fabrication
- Scattering of surface and volume spin waves in a magnonic crystal
- Propagating spin excitations along skyrmion strings
- Unveiling the three-dimensional spin texture of skyrmion tubes
- Ultra Thin Films of Yttrium Iron Garnet with Very Low Damping: A Review
- Propagation of spin-waves packets in individual nano-sized yttrium iron garnet magnonic conduits
- Monocrystalline free standing 3D yttrium iron garnet magnon nano resonators
- Observation of Coherent Spin Waves in a Three-Dimensional Artificial Spin Ice Structure
- Slow-wave based magnonic diode
- 3D Nanomagnetism in Low Density Interconnected Nanowire Networks
- Domain wall automotion in three-dimensional magnetic helical interconnectors
- Patterned growth of crystalline YFeO nanostructures with engineered magnetic shape anisotropy
- Magnonic crystals - prospective structures for shaping spin waves in nanoscale
- Non-planar geometrical effects on the magnetoelectrical signal in a three-dimensional nanomagnetic circuit
- 3D Interconnected Magnetic Nanowire Networks as Potential Integrated Multistate Memristors
- Three-dimensional spin-wave dynamics, localization and interference in a synthetic antiferromagnet
- Spin-wave spectral analysis in crescent-shaped ferromagnetic nanorods
- Laser patterning of magnonic structure via local crystallization of Yittrium Iron Garnet