To have a quantum-mechanical treatment we model a crystalline solid as matter in which the atoms have long-range order, that is a recurring (periodical) pattern of atomic positions that extends over many atoms. We will describe the wavefunctions and energy levels of electrons in such periodical atomic structures. We want to answer the question: Why do some solids conduct curr We want to answer the question: Why do some solids conduct current ent and others don and others don’ ’t? t?. | i CKIEDAI DLJVQIf Q GENERAL rHTOlCO III Optics Quantum Physics Chapter XXIV Crystalline Solids 1. Wavefunctions and energy band of electrons 2. Electronic conduction in metals 3. Semiconductors To have a quantum-mechanical treatment we model a crystalline solid as matter in which the atoms have long-range order that is a recurring periodical pattern of atomic positions that extends over many atoms. We will describe the wavefunctions and energy levels of electrons in such periodical atomic structures. We want to answer the question Why do some solids conduct current and others don t
