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band theory |
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band theoryIn chemistry and physics, a theoretical model describing the states of electrons in solid materials, which can have energy values only within certain specific ranges, called bands. Ranges of energy between two allowed bands are called forbidden bands. As electrons in an atom move from one energy level to another, so can electrons in a solid move from an energy level in one band to another in the same band or in another band. The band theory accounts for many of the electrical and thermal properties of solids and forms the basis of the technology of devices such as semiconductors, heating elements, and capacitors (see capacitance). How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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To answer this question, scientists from the Nist Center for Neutron Research, Princeton University, the University of Maryland, and the University of Pennsylvania have carried out temperature-dependent neutron measurements of the crystal structure and phonon density of states, and have compared these results with detailed first-principles calculations of the lattice dynamics and electronic band structure for [MgB. |
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