期刊论文详细信息
Prediction of inelastic light scattering spectra from electronic collective excitations in GaAs/AlGaA score-multishell nanowires
Article
关键词: SINGLE-PARTICLE EXCITATIONS;    ELEMENTARY EXCITATIONS;    CHARGE-DENSITY;    QUANTUM WIRES;    SPIN-DENSITY;    PLASMONS;    SYSTEMS;   
DOI  :  10.1103/PhysRevB.91.245303
来源: SCIE
【 摘 要 】

We predict inelastic light scattering spectra from electron collective excitations in a coaxial quantum well embedded in a core-multishell GaAs/AlGaAs nanowire. The complex composition, the hexagonal cross section, and the remote doping of typical samples are explicitly included, and the free electron gas is obtained by a density functional theory (DFT) approach. Inelastic light scattering cross sections due to charge and spin collective excitations belonging to quasi-one-dimensional (1D) and quasi-2D states, which coexist in such radial heterostructures, are predicted in the nonresonant approximation from a fully three-dimensional multisubband time-dependent DFT (TDDFT) formalism. We show that collective excitations can be classified in azimuthal, radial, and longitudinal excitations, according to the associated density fluctuations, and we suggest that their character can be exposed by specific spectral dispersion of inelastic light scattering along different planes of the heterostructure.

【 授权许可】

Free   

  文献评价指标  
  下载次数:0次 浏览次数:2次