3.1: Two Terminal Quantum Dot Devices

In this part of the class we are going to study electronic devices. We will examine devices consisting of a quantum dot or a quantum wire conductor between two contacts. We will calculate the current in these "two terminal" devices as a function of voltage. Then we will add a third terminal, the gate, which is used to independently control the potential of the conductor. Then we can create transistors, the building-block of modern electronics. We will consider both nanotransistors and conventional transistors.

We will begin with the simplest case, a quantum dot between two contacts.

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