In solid-state physics, the free electron model is a quantum mechanical model for the behaviour of charge carriers in a metallic solid. It was developed...

the nearly free electron model (or NFE model and quasi-free electron model) is a quantum mechanical model of physical properties of electrons that can move...

Independent electron approximation Lone pair or free electron pair Nearly free electron model Orbital angular momentum of free electrons Unpaired electron This...

The Drude model of electrical conduction was proposed in 1900 by Paul Drude to explain the transport properties of electrons in materials (especially metals)...

the quantum effects, as in the free electron model, the heat capacity, mean free path and average speed of electrons are modified and the proportionality...

sometimes called the electron heat capacity, is the specific heat of an electron gas. Heat is transported by phonons and by free electrons in solids. For pure...

with two complementary models for electrons in solids.: 161  The first one is the nearly free electron model, in which the electrons are assumed to move...

electrons (in the form of an electron cloud of delocalized electrons) and positively charged metal ions. It may be described as the sharing of free electrons...

The nearly free electron model is a modification of the free electron model which includes a weak periodic perturbation meant to model the interaction...

particles. Usual models are the free electron model and the nearly free electron model. In the appropriate systems, the free electron pressure can be calculated;...

calculating electronic properties, like the heat capacity, in the free electron model of solids. In these calculations the above integral expresses the...

structure model suggests that this quantum mechanical model describes the properties of tightly bound electrons in solids. The electrons in this model should...

Field electron emission, also known as field emission (FE) and electron field emission, is emission of electrons induced by an electrostatic field. The...

Perdew–Burke–Ernzerhof exchange model (a direct generalized gradient parameterization of the free-electron gas with no free parameters); however, this is...

term is up to 1000 times larger than the value expected from the free electron model. The properties of the heavy fermion compounds often derive from...

the dispersion relation. Models of solids and crystals: Tight-binding model Free electron model Nearly free electron model Kittel, Introduction to Solid...

known as the uniform electron gas (UEG) or homogeneous electron gas (HEG), is a quantum mechanical model of interacting electrons in a solid where the...

electromagnetic field so electrons are subject to a regular potential inside the lattice. It is a generalization of the free electron model, which assumes zero...

potential of the lattice in this free electron model must be weak because otherwise the electrons wouldn't be free. The strength of the scattering mainly...

of O2, which VSEPR theory cannot explain. In molecular orbital theory, electrons in a molecule are not assigned to individual chemical bonds between atoms...

neutrons in a neutron star, and electrons in a white dwarf. An ideal Fermi gas or free Fermi gas is a physical model assuming a collection of non-interacting...

of the electron in 1897, but it was subsequently rendered obsolete by Ernest Rutherford's discovery of the atomic nucleus in 1911. The model tried to...

crystals as null. It is a requirement for both the free electron model and the nearly-free electron model, where it is used alongside Bloch's theorem. In...

used to model the behavior of electrons in a metal (in the Drude model and the free electron model), and it is one of the most important models in statistical...

proposed a model of the hydrogen atom with an electron circulating on the surface of a sphere of positive charge much like Thomson's plum pudding model. But...

theory similar to Lewis' only his model assumed complete transfers of electrons between atoms, and was thus a model of ionic bonding. Both Lewis and Kossel...

introductory models of solids like the Drude model, the free electron model and the nearly free electron model. The first theoretical treatment of electrostatic...

from each other by electrons. The free electron model of metals derives their physical properties by considering the conduction electrons alone as a degenerate...

The electron ( e− , or β− in nuclear reactions) is a subatomic particle with a negative one elementary electric charge. Electrons belong to the first...

of models to describe the hot-electron effect. The simplest predicts an electron-phonon (e-p) interaction based on a clean three-dimensional free-electron...