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arXiv 1107.2866physics.opticscond-mat.mes-hall
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考虑表面效应的球形金属纳米粒子的光学和输运性质

Optical and transport properties of spheroidal metal nanoparticles with account for the surface effect

Nicolas I. Grigorchuk, Petro M. Tomchuk

摘要:

采用动力学方法建立了Drude-Sommerfeld模型,研究了自由电子路径远大于颗粒尺寸时球形金属纳米颗粒的光电输运性质.对于扁球形或长球形的纳米颗粒,已经发现介电函数和电导率依赖于许多因素,包括频率、颗粒半径、球形纵横比和电场相对于颗粒轴的取向。在一定频率范围内,磁导率的实部和虚部随颗粒尺寸的增大而振荡;在一定半径范围内,磁导率的实部和虚部随频率的增大而振荡。动力学方法得到的结果与已知的经典模型进行了比较。

英文摘要:

The kinetic approach is applied to develop the Drude-Sommerfeld model for studying of the optical and electrical transport properties of spheroidal metallic nanoparticles, when the free electron path is much greater than the particle size. For the nanoparticles of an oblate or a prolate spheroidal shape there has been found the dependence of the dielectric function and the electric conductivity on a number of factors, including the frequency, the particle radius, the spheroidal aspect ratio and the orientation of the electric field with respect to the particle axes. The oscillations of the real and imaginary parts of the dielectric permeability have been found with increasing of particle size at some fixed frequencies or with frequency increasing at some fixed radius of a nanoparticle. The results obtained in kinetic approach are compared with the known from the classical model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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