What are electronic transport properties?

Electronic transport properties are about how electrons move through materials, just like how water flows through a pipe or cars drive on a highway.

Imagine you're playing with toy cars on different kinds of roads: a smooth sidewalk, a bumpy path, and a crowded street. On the smooth road, your cars zoom quickly; on the bumpy one, they slow down; and in traffic, they might barely move at all. That’s like how electrons behave in different materials, some let them go fast, others hold them back.

In a material, electrons are like tiny travelers. If the material is easy for them to move through, think of it as a smooth road, they can travel quickly and easily. This makes the material conductive, like copper wires in a lamp.

But if the path is bumpy or narrow, maybe there are lots of obstacles, the electrons have a harder time moving. That’s why some materials, like rubber, don’t let electricity pass through them easily, they’re insulators.

So, when we talk about electronic transport properties, we're really asking: How easy is it for electrons to move in this material?