Equivalent electric circuit of a carbon nanotube based molecular conductor

TL;DR

This paper uses first-principles simulations to analyze the transient electrical response of carbon nanotube conductors and demonstrates that their behavior can be represented by an equivalent classical electric circuit.

Contribution

It introduces a method to map the dynamic electrical response of carbon nanotube conductors onto an equivalent classical circuit based on first-principles calculations.

Findings

Electrical response can be accurately modeled by an equivalent circuit.

The method is validated on a simple model system.

Dynamic conductance is characterized under time-dependent bias.

Abstract

We apply our first-principles method to simulate the transient electrical response through carbon nanotube based conductors under time-dependent bias voltages, and report the dynamic conductance for a specific system. We find that the electrical response of the carbon nanotube device can be mapped onto an equivalent classical electric circuit. This is confirmed by studying the electric response of a simple model system and its equivalent circuit.