发表机构
Central European Institute of Technology, Brno University of Technology; Jilin Diamond Technology Research & Development（中欧技术研究所，布尔诺理工大学; 吉林钻石技术研发有限公司）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过拉曼光谱结合密度泛函理论计算，在石墨和金刚石中检测到声学声子，利用晶格非晶化和硼掺杂激活禁戒模式，并发现金刚石中类似石墨的无序，方法可推广至其他材料。
AI 中文摘要
我们通过密度泛函理论计算支持的拉曼光谱，在石墨和金刚石中检测到了声学声子。这些通常被禁止的拉曼模式的激活，在石墨的情况下通过晶格非晶化实现，而在金刚石的情况下则通过硼掺杂实现。金刚石中掺杂诱导的拉曼信号，通过其对激发波长和偏振的依赖性，被识别为具有四面体对称性的替代硼。非晶化石墨和重硼掺杂金刚石的拉曼光谱比较表明，金刚石晶格中出现了类似石墨的无序。所报道的方法不仅限于碳，还可以扩展到其他多种材料。
英文摘要
We detected acoustic phonons in graphite and diamond by Raman spectroscopy supported by density functional theory calculations. The activation of these normally forbidden Raman modes was achieved via lattice amorphization in case of graphite and by boron doping in case of diamond. The doping-induced Raman signal in diamond was identified with substitutional boron of tetrahedral symmetry via its dependences on excitation wavelength and polarization. Comparison of the Raman spectra of amorphized graphite and heavily boron-doped diamond suggests the emergence of graphitic-like disorder in the diamond lattice. The reported approach is not limited to carbon and can be extended to a wide range of other materials.
Journal refJournal of Raman Spectroscopy, 2026
