A New Definition of Capacitance of Few Electron Systems

摘要：

Due to the discreteness of electronic charges in a nanoscale system, capacitance is defined in terms of the total interaction energy of N-electrons confined in a dielectric sphere. Specifically, the distribution of N-electrons is obtained from minimization of the total interaction energy including Coulomb, polarization and the self-polarization terms. And recently, by including the formation energy, the work done on the system, the capacitance agrees with the case when N=1 and N=∞ 1.While Schrodinger equation is crucial in dealing with kinetic energy, it is the Poisson equation that allows properly accounting for spatial symmetry properties resulting from the discrete nature of electrons.

作者: Tim LaFave Jr Raphael Tsu

作者单位: Department of Physics and Astronomy,University of Iowa,Iowa,IA 52242,USA Department of Computer and Electrical Engineering University of North Carolina at Charlotte,Charlott

会议类型: 国际会议

会议名称: Progress in Electromagnetics Research Symposium 2008(2008年电磁学研究新进展学术研讨会)(PIERS 2008)

会议地点: 杭州

会议语种:英文

页码: 1-6

在线出版日期: 2008-03-24（万方平台首次上网日期，不代表论文的发表时间）