05/20/2025, 10:43 AM UTC
发光磁体:半导体磁体表面发现准粒子Luminous Magnets: Quasiparticles Discovered on the Surface of Semiconductor Magnets
➀ 研究团队在反铁磁量子半导体铬硫溴化物(CrSBr)表面发现发光准粒子(激子),打破了激子仅存在于材料内部的传统认知;
➁ 通过超快显微技术与光谱学方法,团队在仅几原子厚的超薄晶体层中观测到表面激子,其发光颜色与内部激子不同,反映了磁序对光学行为的调控;
➂ 这一国际合作成果为光子学与磁性结合的新技术提供了科学基础,未来或推动量子信息与能量存储等领域的创新。
➀ Researchers discovered luminous quasiparticles (excitons) on the surface of the antiferromagnetic semiconductor CrSBr, challenging the belief that they could only exist within the material;
➁ Using ultrafast microscopy and spectroscopy, the team visualized surface excitons in ultra-thin crystal layers, noting distinct optical properties compared to internal excitons;
➂ The international collaboration highlights potential applications in energy storage, quantum information, and photonics-magnetism hybrid technologies.
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