等离子体子
表面等离子共振
插层(化学)
基质(水族馆)
表面等离子体子
材料科学
拉曼散射
局域表面等离子体子
电子结构
原子轨道
拉曼光谱
电子
化学
光电子学
纳米技术
计算化学
无机化学
光学
纳米颗粒
物理
海洋学
量子力学
地质学
作者
Junxiang Li,Qiqi Li,Hai L. Feng,Kui Jiao,Changjin Zhang,Shirui Weng,Liangbao Yang
标识
DOI:10.1021/acs.jpclett.3c02742
摘要
While extensive research has been dedicated to plasmon tuning within non-noble metals, prior investigations primarily concentrated on markedly augmenting the inherently low concentration of free carriers in materials with minimal consideration given to the influence of electron orbitals on surface plasmons. Here, we achieve successful intercalation of Au atoms into the layered structure of Fe3GeTe2 (FGT), thereby exerting control over the orbital electronic states or structure of FGT. This intervention not only amplifies the charge density and electron mobility but also mitigates the loss associated with interband transitions, resulting in increased two-dimensional FGT surface plasmon activity. As a consequence, Au-intercalated FGT detects crystal violet molecules as a surface-enhanced Raman scattering substrate, and the detection lines are 3 orders of magnitude higher than before Au intercalation. Our work provides insight for further studies on plasmon effects and the relation between surface plasmon resonance behavior and electronic structures.
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