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Tuning of spin-wave transmission and mode conversion in microscopic YIG waveguides with magnonic crystals.
- Source :
-
Journal of Applied Physics . 11/21/2022, Vol. 132 Issue 19, p1-6. 6p. - Publication Year :
- 2022
-
Abstract
- We report experimental results on spin-wave propagation, transmission gap tuning, and mode conversion in straight, curved, and Y-shaped yttrium iron garnet waveguides with magnonic crystals made of submicrometer-wide airgrooves. We observe forbidden frequency gaps with sizes up to 200 MHz in straight waveguides and narrowing of the gaps in curved and Y-shaped waveguides. The spin-wave transmission signal is strongly suppressed inside the gaps and remains high at allowed frequencies for all waveguide types. Using super-Nyquist sampling magneto-optical Kerr effect microscopy, we image symmetric and asymmetric spin-wave interference patterns, the self-focusing of propagating spin waves, and interconversions between width modes with different quantization numbers. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SPIN waves
*KERR magneto-optical effect
*WAVEGUIDES
*YTTRIUM iron garnet
*CRYSTALS
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 132
- Issue :
- 19
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 160348450
- Full Text :
- https://doi.org/10.1063/5.0123234