ELECTRON III: Effective mass theorem, dynamics of electrons and holes
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چکیده
Band structure basically tells us the exact quantum mechanical description of the electrons, and in principle all properties of solids can be calculated from it. The quantum mechanical solution is nothing but the wave functions of the ‘allowed’ electronic eiganstates. So, an electron in an eiganstate will ideally extend throughout the sample. In another words, the electron is everywhere in space. Does the band structure, a result of quantum mechanical treatment, have anything to do with the Drude picture? (In Drude model, electrons are described as free particles that will occasionally collide with the ions and thereby exchange energy and momentum.) A good picture linking the quantum solution and the classical description is the effective mass theorem.
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