2-d hole gas finally demonstrated

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 ...

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from Electronics Weekly https://www.electronicsweekly.com/news/research-news/2-d-hole-gas-finally-demonstrated-2018-02/