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Encontrar protones, electrones y neutrones atomos proton. The nearlyfree electron model university of oxford. Files are available under licenses specified on their description page. See whats new on the latest version of the microsoft edge browser. There are usually two approaches to understand the origin of band theory associated with solids. Free electron model a free electron model is the simplest way to represent the electronic structure of metals. In the lectures we have derived two simple rules, which are away from brillouinzone boundaries the electronic bands i. This is true for any k,but a periodic perturbation has nonzero matrix elements only between particular states. Although the free electron model is a great oversimplification of the reality, surprisingly in many cases it works pretty well, so that it is able to describe many important properties of metals.
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