KnowraFree electron modelLinked fromLinked fromThe 8 pages that link to Free electron model, each with the reason it gives.All 8Broader topic 1Related 1Narrower topic 2Compared with 4Fermi energyBroader topic: Its parabolic energy bands yield the familiar relation between electron density and Fermi energy.Band structureCompared with: Unlike a crystal band structure, its simplest form has no lattice-induced gaps.Tight-binding modelCompared with: It omits the lattice and orbital structure that generate tight-binding bands.Electronic band structureCompared with: Unlike crystal band theory, it does not naturally produce gaps from lattice periodicity.Nearly-free-electron modelNarrower topic: The nearly-free model begins with these states before adding weak lattice effects.Electron gasNarrower topic: The electron gas is the many-particle foundation behind this broader class of models.PlasmonRelated: It supplies the mobile charges whose collective oscillations can form plasmons.Lattice models in condensed matterCompared with: It neglects much of the site-specific interaction structure retained by lattice models.