论文标题
准2D Rashba系统bitei中的手性电子激发
Chiral Electronic Excitations in a Quasi-2D Rashba System BiTeI
论文作者
论文摘要
使用极化分辨共溶剂的拉曼光谱研究研究了准二维rashba系统bitei的自旋偏振带之间的光学转变。我们检测到相反的状态之间的手性激发，并将光谱与三波段模型中的计算进行比较。使用谐振拉曼激发曲线，我们推断出较高的传统带的RASHBA参数和较高的传导带的带隙，并将参数与Ab Initio量密度函数理论（DFT）获得的值进行比较。
The optical transitions between spin-polarized bands of the quasi-two dimensional Rashba system BiTeI are investigated using polarization resolved resonant Raman spectroscopy. We detect chiral excitations between states with opposite helicity and compare spectra to calculations within a three-band model. Using the resonant Raman excitation profile, we deduce the Rashba parameters and band gaps of the higher conduction bands near the Fermi level, and compare the parameters to values obtained by ab initio density function theory (DFT).
