Phononic Skyrmions
Liyun Cao, Sheng Wan, Yi Zeng, Yifan Zhu, Badreddine Assouar

TL;DR
This paper introduces phononic skyrmions, topological elastic wave structures that operate at room temperature with high robustness and ultra-broad bandwidth, enabling advanced high-speed, topological information processing technologies.
Contribution
The study demonstrates the creation and experimental validation of phononic skyrmions in solid structures at room temperature, overcoming limitations of magnetic skyrmions.
Findings
Existence of phononic skyrmions formed by elastic waves.
Ultra-broadband and tunable spin configurations.
Robustness against defects and structural disorder.
Abstract
Skyrmions with topologically stable configurations have shown a promising route toward magnetic and photonic materials for information processing due to their defect-immune and low-driven energy. However, the practical application of magnetic skyrmions is severely hindered by their harsh cryogenic environment and complex carriers. In addition, the narrowband nature of magnetic and photonic skyrmions leads to lower data rate transmissions, restricting the development of high-speed information processing technologies. Here, we introduce and demonstrate the concept of phononic skyrmion as new topological structures to break the above barriers. The phononic skyrmion can be produced in any solid structure at room temperature, including chip-scale structures, with high robustness and ultra-bandwidth, which could pave a new path for high-speed and topological information processing…
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Taxonomy
TopicsAcoustic Wave Phenomena Research · Music Technology and Sound Studies · Music and Audio Processing
