An example of ARPES data for the material BAFe2As3. From simple parabolic bands to complex interacting bandstructures are measured in great detail with high resolution ARPES tools.
An example of ARPES data for the material BAFe2As3. From simple parabolic bands to complex interacting bandstructures are measured in great detail with high resolution ARPES tools.
The valence and conduction band electron states in solids determine the properties of the materials. Depending on the bandstructure a material can be a conductor or an insulator, have a specific colour, shows magnetics properties etc. The quantum mechanical wavefunctions of the electrons in a periodic potential displays an energy dependence (dispersion) depending of the degree of overlap of the atomic constituents and the symmetry of the atomic arrangement in the solid. ARPES is a method to determine the relation of electron momentum (vector) and energy and is therefore a powerful tool in examining the intrinsic characteristics for electron conductivity, electron mobility, magnetism etc.
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