We explore multi-terminal quantum transport through a benzene molecule threaded by an Aharonov-Bohm flux φ. A simple tight-binding model is used to describe the system and all the calculations are done based on the Green's function formalism. With a brief description of two-terminal quantum transport, we present a detailed study of three-terminal transport properties through the benzene molecule to reveal the actual mechanism of electron transport. Here we numerically compute the multi-terminal conductances, reflection probabilities and current-voltage characteristics in the aspects of molecular coupling strength and magnetic flux φ. Most significantly we observe that, the molecular system where the benzene molecule is attached to three terminals can be operated as a transistor, and we call it a molecular transistor. This aspect can be utilized in designing nanoelectronic circuits and our investigation may provide a basic framework to study electron transport in any complicated multi-terminal quantum system.
In REF , the behavior of three terminal electron transport has been examined considering a single benzene molecule attached to three terminals.
Multi-terminal quantum transport through a single benzene molecule: Evidence of a Molecular Transistor
Solid State Communications, Volume 150, Issues 29-30, August 2010, Pages 1269-1274
Physics