Two-dimensional electron gas clouds are used in electronic devices – they are the reason GaN transistors conduct so well. But where is the long-postulated two-dimensional hole gas? The answer is: it is where Professor Chang-Beom Eom and his team made it, at the University of Wisconsin-Madison. “The 2D hole gas was not possible primarily because ...

This story continues at 2-d hole gas finally demonstrated

Or just read more coverage at Electronics Weekly