Network functions for characterization of elementary semiconductor nanostructures

As the frequency of operation of integrated circuits approaches the terahertz range, plasmonic interactions of charge carriers in the devices will have influence on their performance or become the enabling mechanism for new functional circuits. Space-charge dynamics in elementary semiconductor nanostructors can be characterized by their response to electric field excitation as conveyed by the corresponding network functions. These network functions provide insight to the nature of field-charge interactions and offer a framework for the modeling of complex structures with the aid of network theory. Network functions for a semiconductor nanoplate and a spherical nanoparticle are synthesized from charge-transport consideration for efficient characterization of the polarizability of these two elementary structures. Frequency response of the polarization given by the network functions are compared to that obtained by field analysis and simulation.