Nonlocal optical response of assemblies of semiconductor spheres.
Nonlocal optical response of assemblies of semiconductor spheres.
复制标题
半导体球体组件的非局部光学响应。
DOI：
10.1103/physrevb.51.14379
复制
发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Cho
中科院分区：
文献类型：
--
作者：
Ohfuti;Cho
用非局域理论研究了半导体小球组装体的线性光学响应。薛定谔方程和麦克斯韦方程的自洽处理自然会导致对电子能级的复杂辐射修正。从反应谱和延迟相互作用的矩阵元中考察了尺寸和维数依赖性。对于一维和二维无限球晶格，解析地表明，用这种半经典方法得到的复辐射修正与用QED得到的复辐射修正一致。有限系统的尺寸依赖性进行了数值研究的一些几何形状。结果表明，即使系统远小于共振光波长，库仑相互作用也会导致响应谱的强烈几何依赖性。还研究了激发极化的尺寸共振增强。
Linear optical response of assemblies of small semiconductor spheres is studied by using a nonlocal theory. A self-consistent treatment of the Schrödinger and Maxwell equations naturally leads to complex radiative corrections to electronic levels. The size and the dimensionality dependence is examined from the response spectra and the matrix elements of the retarded interaction. For one and two dimensional infinite lattices of the spheres, it is shown analytically that the complex radiative corrections obtained by this semiclassical approach agree with those obtained by QED. The size dependence in finite systems is investigated numerically for some geometries. It is shown that the Coulomb interaction causes a strong geometry dependence of response spectra even if the system is much smaller than the wavelength of resonant light. The size-resonant enhancement of induced polarization is also investigated.