Electronic band structures

Density of states

In solid state physics and condensed matter physics, the density of states (DOS) of a system describes the number of modes per unit frequency range. The density of states is defined as , where is the number of states in the system of volume whose energies lie in the range from to . It is mathematically represented as a distribution by a probability density function, and it is generally an average over the space and time domains of the various states occupied by the system. The density of states is directly related to the dispersion relations of the properties of the system. High DOS at a specific energy level means that many states are available for occupation. Generally, the density of states of matter is continuous. In isolated systems however, such as atoms or molecules in the gas phase, the density distribution is discrete, like a spectral density. Local variations, most often due to distortions of the original system, are often referred to as local densities of states (LDOSs). (Wikipedia).

Density of states
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Related pages

Inverse function | K·p perturbation theory | Multicanonical ensemble | Symmetry | Probability density function | Tetrahedral symmetry | Isolated system | Parallel tempering | Fermi gas | Domain of a function | Euclidean topology | Pauli exclusion principle | Electron | Density functional theory | Wave vector | Distribution function (physics) | Brillouin zone | Octahedral symmetry | Fermion | Point groups in three dimensions | Dihedral symmetry in three dimensions | Muffin-tin approximation | Spectral density | Free electron model | Wang and Landau algorithm | List of character tables for chemically important 3D point groups | Electronic band structure | Isotropy | Valence and conduction bands | Fundamental domain | Cubic crystal system | Neutron star | Fermi level | Neutronium