Zhang Jinxing and Shen Ka's Team and Collaborators from the School of Physics and Astronomy Published Their Academic Result in Nature Materials
Recently, Zhang Jinxing and Shen Ka's team and collaborators from the School of Physics and Astronomy published their academic result titled "Switchable long-distance propagation of chiral magnonic edge state" in Nature Materials. The editor published a research briefing titled "Efficient propagation of a chrial magnonic edge state in a strongly correlated oxid" to highlight the related work.
Zhang Yuelin, Qiu Lei and Wu Shizhe from the Department of Physics of Beijing Normal University and Chen Jilei from Beihang University are co-first authors of the paper. Zhang Jinxing and Shen Ka, from the School of Physics and Astronomy of BNU, and Yu Haiming , from the School of Electrical Collection, Beihang University, are co-corresponding authors of this paper. Other collaborators also contributed important experimental and theoretical contributions to this work.
The abstract of the paper is as follows:
The coherent spin waves, magnons, can propagate without accompanying charge transports and Joule heat dissipation. Room-temperature and long-distance spin waves propagating within nanoscale spin channels are considered promising for integrated magnonic applications, but experimentally challenging. Here we report that long-distance propagation of chiral magnonic edge states can be achieved at room temperature in manganite thin films with long, antiferromagnetically coupled spin spirals (millimetre length) and low magnetic Gilbert damping (~3.04 × 10−4). By directly observing the non-reciprocal spin-wave propagation and analysing the strong magnon–magnon coupling in the spiral textures, we elucidate the crucial role of the dynamic dipolar interaction on the birth and hybridization of this chiral magnonic edge state. The observed hybridized magnons with robust chirality can be reversibly and selectively switched on/off by different threshold angles under an external field, indicating great potential for the design of versatile magnonic devices at the nanoscale.
Full text link:
https://www.nature.com/articles/s41563-024-02065-x
Research briefing links:
